Overview:
-Estimated achievement difficulty: 8/10
-Offline: 37 (1005)
-Online: 10 (245)
-Approximate amount of time to 1250g: 40+ hours
-Minimum number of playthroughs needed: 
-Number of missable achievements: None!
-Glitched achievements: None!
-Do cheat codes disable achievements?: No cheats
-Does difficulty affect achievements?: Yes

This game is fairly easy to get the majority of the points in but for the full 1250 you will need to download two DLC packs (one of which is free) and also invest a significant amount of time online to get Retirement Savings Plan. The single player is pretty straightforward though and playing in co-op with a friend makes your life a lot easier.

Be aware that one of the achievements (Starting a Riot) does require you to play in human co-op, as the A.I. will never pick up the riot shield for you.

Introduction:
Army of Two has 1000 points available with the retail game, another 100 through the Challenger pack and a further 150 through the free sponsored DLC. You will have to play the game at least twice, as the Elite difficulty will not unlock until you complete the game for the first time. You can bypass this by playing online co-op with a friend who has accessed Elite difficulty already. Also, it is impossible to get all of the weapons kills in just one play-through as there simply are not enough enemies. You can just select individual levels in order to rack up the kills, overkills etc achievements though. Online is a different story as you will have to rack up $1 billion which is rather time consuming.

Step #1: Playthrough on Normal
Play through the game and focus on using each weapon until you have the required number of kills with it, then switch to another. Save all of your money to buy the achievement specific guns and use a guide to locate all of the briefcases on each level. It would be wise to do this difficulty with the A.I. as your partner for the achievement as they are less helpful on the highest difficulty. If you have the DLC then you can do the extra two missions as well, use the correct handgun to kill the last boss for an achievement here.

Step #2: Play-through on Elite
Complete the game again on Elite, again working on any kill achievements you are missing. Do this in co-op with a friend so you can get the Riot Shield achievement too, plus they will be much better help than the A.I.

Step #3: Clean-up
After finishing the game twice go back and mop up anything you missed, which will probably be the kills achievements and the DLC ones for destroying objects (only applies to the last two levels) and killing the last boss in under 40 seconds. You can just level select for any achievements you are missing here.

Step #4: Online
For online I would recommend finding three boosting partners as otherwise you are looking at hundreds of hours of legit play. Assuming you have three people then go and do the SSC Challenge matches first and take it in turns to get all the specific achievements and blow up the required number of barrels. Do not kill each other or buy any other weapons except the pack needed for an achievement and you will pick up pretty much everything. Once these are cleared up you will need to start playing twenty minute Bounties games in Afghanistan, taking it in turns for each team to do major and minor objectives. This will net both sides a large amount of money. Keep this up all the way to $1 billion.

NOTE: The online leaderboards for money reset every now and then but do not panic, your money earned up to that point will still be counted. The achievement willl still pop when your cumulative total is correct rather than it having to say $1 billion on the boards.

Conclusion:
The single player is pretty much a walk in the park, though some of the DLC achievements can be a pain without a human partner. The online mode is a lot more troublesome, especially without boosting, and will require a lot of time and effort. I would suggest getting a dedicated team of people before even attempting the full 1250.
 
[x360a would like to thank jackanape for this Road Map]

Army of Two (EU) Achievement Guide

Printable Guide
Show completed achievements
Show secret achievements

There are 47 achievements with a total of 1250 points

  • Complete all missions as a Professional.

      

    Professional only unlocks after beating the game at least once on either Recruit or Contractor difficulty. Enemies hit harder and there's much less time for your partner to revive you when you are down.

    NOTE: You can go to Mission Select and play each mission on Professional out of order and it will still unlock.

    Tips:
    -All Primary Weapons unlock after your first playthrough so save your money for upgrading the firepower of your favorite guns. The Dao-X kills most enemies with 2 shots and also knocks down even heavy armored guards at mid to close range.
    -Play slow and clear out all enemies before advancing (the majority of the the enemies in every area are finite, so you will eventually kill all of them)
    -You can unlock this with either the AI or a co-op partner.

  • Complete all missions with the Partner AI.

    Complete all 6 missions with the AI as your partner on any difficulty.

  • Purchase the MP7, M134, DAO-X Protecta, MGL MK-X, and the M107 Light Fifty.

    After completing the game on any difficulty, all primary weapons are unlocked so you can save money on 3 of the 5 guns (M134, DAO-X and MGL MK-X). Just purchase the remaining two guns (MP7 under 'Secondary Weapons' and M107 Light Fifty under 'Special Weapons') to get the achievement.

    OR

    Complete the game on Professional (see "Elite PMC") to unlock every weapon and the achievement.

  • Purchase every mask variant.

     

    You will need $110,000 for this. Purchase all masks for one character to get this. Make sure you have enough to buy all the masks and once the achievement unlocks, power off your 360 and boot the game up again. You'll have both the achievement and your money intact.

  • Earn one million dollars in total over the course of campaign mode.

    This can be earned throughout the course of 3+ playthroughs of the game.

    A complete playthrough is worth $395,000 if you collect all briefcases and complete all bonus objectives. Assuming you have already collected all briefcases in the 1st playthrough, the 2nd time you can only earn $288,500 max. 3 playthroughs will therefore net you $972,000. You can spend money you earn as the game tracks your total earned, and not what you currently have.

    Note: Objective rewards are the same in any difficulty.

    Most of the sub-objectives are pretty straightforward except for one in China where you are asked to take down the first Chinook. Preparation is needed beforehand:

    You need either the RPG or Stinger (FIM92). I recommend the Stinger because despite the damage chart, it does more damage than the RPG (2 shots to take down the Chinook instead of 3 RPGs), it comes with 3 ammo by default and it has lock on. The only con is that it cost nearly 5x more.

    Once you dock at the dam, enter mid-mission shopping if you haven't already and equip/buy the Stinger ($42,500). Throw the first control switch and clear out all the enemies first before moving the hovercraft in. After climbing up the ladder, clear out any remaining enemies again. Once you throw the 2nd control switch, the Chinook comes flying in across the dam. Lock on and take it down with 2 missiles before it flies off.

    OR

    Go to Mission Select once you've completed the game and choose level China and complete the first objective (Blow up the bridge the convoy is passing over), run back to the hovercraft at the bottom to trigger the checkpoint (else the money won't be credited) and then quit the game. It takes less than 2 minutes and it's worth $30,000. You can rinse and repeat till you get 1 million.

  • Spend 1 minute straight at full Aggro.

     

    You can get this at the first turret at the game's tutorial area in Somalia. You have unlimited bullets so just hide behind cover at the turret and blind fire till you get the achievement.

  • Kill 50 enemies total in Co-op Riot Shield.

     

    This is the only single player campaign achievement that cannot be gotten without a 2nd controller/human partner. You have to be the one behind doing the shooting while your partner holds the Riot Shield to get this. I recommend doing it on Mission 2, Afghanistan on Casual difficulty. There's a part in the level where you are in some corridors filled with gas. There's a riot shield right outside the lift you come out from. Have one player pick up the riot shield and one behind doing all the shooting. Take the left path and circle clockwise. You can easily get at least 12 kills before the shield breaks. Once it breaks, restart from checkpoint and you'll be outside the lift again. Do this 4-5 times to get this achievement.

  • Kill 5 enemies total using Co-op Snipe.

     

    This can be done as early as Somalia, after killing Mo'Alim, you are asked to clear out the street so the chopper can land. Clyde will hint to you that you should use Co-op snipe to take out the gas tank. Don't. Get into a good position near the back of the street and enter co-op snipe. Take out 5 guards to get the achievement. Do not press to cancel out of it as you cannot enter back into Co-op snipe mode after that.

  • Kill 250 enemies total using Assault Rifles.

     

    Assault Rifles:
    -S-System
    -HK 36
    -AK-47
    -AUG
    -FELIN-2C

    These achievements will be earned throughtout the course of the game if you take out a majority of the enemies. Switch to another Primary/Secondary weapon once you've gotten it so that you can start raking up kills for another gun. Kills online also count towards these achievements (whether be it AI or player kills).

    For the Assault Rifle, Handguns and Sniper Rifles achievements, a good place to get them is the final training area of the first mission (Somalia). Ask your partner to advance ahead, he will then stop cause there's a proximity mine ahead. Throw a grenade beside him and he will run forward and be injured by the mine. Drag him around the corner and kill the guards that keep spawning. You have unlimited ammo and invulnerability. There will be 120 guards spawning 2 by 2 behind the fence so take them out at your leisure with one of the 3 guns. (This is cause you are stuck with stock weapons for the entire 1st mission). Your AI partner will not die while you are doing this.

    You can also get the Submachine gun achievement in the last area in training. Start the the first level Somalia with Salem and select your secondary weapon when the training tutorial prompts you to swap weapons to get a submachine weapon from Rios and do the steps outlined in the paragraph above.

  • Kill 250 enemies total using Shotguns.

    Shotguns:
    -M3 Super 90
    -FSPS-12
    -DAO-X

    See "Seven-six-two Millimeter".

  • Kill 250 enemies total using Machine Guns.

     

    Machine Guns:
    -M249 SAW
    -PKM
    -M134

    See "Seven-six-two Millimeter".

  • Kill 150 enemies total using Handguns.

     

    Handguns:
    -M92 Elite II
    -SOCOM Mk23
    -G18C
    -DEAGLE
    -.44 Model 29

    See "Seven-six-two Millimeter".

  • Kill 250 enemies total using SMGs.

     

    SMGs:
    -Skorpion
    -MP-11A1
    -MP5k
    -P90
    -MP7

    See "Seven-six-two Millimeter".

  • Kill 100 enemies total using Sniper Rifles.

     

    Sniper Rifle:
    -M14
    -MSG-90
    -DSR-1
    -SVD
    -M107 Light 50

    See "Seven-six-two Millimeter".

  • Kill 25 enemies total using RPGs.

     

    RPGs:
    -RPG-7 V1
    -FIM92 Stinger
    -SAL-86

    See "Seven-six-two Millimeter".

  • Kill 50 enemies total using the Melee Attack.

     

    Run up close to an enemy and press to do a melee attack. Kill 50 for this achievement. In the later stages, enemies with red health bars will not die from one melee attack so be careful. Enemies with blue life bars will still be taken out with one attack. It's hard but possible (unadvisable) to do them on heavy armored guards from behind but there's no point.

  • Kill 25 Martyrs by shooting the Bomb Packs on their chests.

     

    Only Mission 2 (right after the opening parachute sequence you can take out 6-7 martyrs) and Mission 3 (halfway through the mission) have martyrs. Shoot 25 in the chest to make the bomb packs explode. This may not be achievable on 1 playthrough cause I believe there are less than 25 martyrs.

  • Kill 25 Heavy Armor enemies.

     

    If you make sure you kill every heavy armor enemy in your playthrough, you will get this mid-way through the 2nd playthrough. If not, Miami has the highest number of Heavys in the game (about 6) and 4 of them are worth $5,000 each when you kill them.

    Note: In Iraq, Ali Youseff is also considered to be a heavy armor enemy.

  • Drag and heal your partner 25 times.

     

    Heal your partner 25 times by holding the 'A' button when he's down. Training mission in Somalia does not count. You can also repeatedly shoot at him to bring him down (if you have the ammo) and then heal him to get this.

  • Finish playing a versus ranked match.

     

    Just as it says, simply complete a versus ranked match. Shortest duration is 10 minutes and you need 4 players minimum to play a ranked game.

  • Complete 20 minor objectives in a ranked match.

     

    In an online ranked game, press to open the GPS. Minor objectives are highlighted in yellow. All you have to do is go up to them and press to pick them up. Best done in a 20 minute match. Some minor objectives can only be reached via step-jump. If you find that none are appearing on your GPS, go complete a main objective and they will respawn eventually. You might want to split with your partner so that one does the main objective while the other collects the minor ones. Both players on that team will get this achievement once it's done.

  • Complete a ranked match without ever needing to be revived.

     

    You needs to stay alive for an entire ranked match to get this. If you know the opposing team's players it will be easier to arrange a truce. Watch out for the AI running amok and sometimes just spawning right behind you and you should be fine. You can get shot to near death and then Feign Death for the entire match and it will also unlock.

  • Earn one billion dollars in total in ranked matches.

    Earn $1,000,000,000 in ranked games online. Good teamwork and knowledge of the maps can net each player a few million dollars every 10 minutes. Collecting minor objectives is a good and efficient way to boost your earnings.

    For help on this, check this thread.

  • Heal your partner for the first time. Training does not count.

     

    See "Field Medic".

  • Win a ranked match without purchasing any additional weapons.

     

    Do not approach any of the green highlighted weapons machine and do not buy weapons in an online match. Out-earn your opponent to win the match.

  • Kill 50 enemies total in Back-to-Back.

     

    During the scripted back-to-back sequences, kill 50 enemies. You will get this in the course of 1 playthrough.

  • Kill 75 enemies while in the stealth mode of Overkill.

    Put your AI partner to aggressive-hold and wait till the aggro meter fills up. The aggro bar on his side will fill to the max, then another darker red bar will fill inside after that, let him maintain the aggro for another 2 seconds and press to enter Stealth Overkill mode. Kill 75 enemies to get this. Not firing at all while your partner draws aggro will fill the meter quicker.

  • Kill 100 enemies while in the power mode of Overkill.

     

    Put your AI partner to passive mode and keep firing at the enemies. You need to kill at least 1 to max the aggro meter. After maxing it, continue firing to let a darker meter fill inside the red bar. Hold it for 2 seconds once it's filled and press to enter the Power mode of Overkill. All enemies will fire at you during this time but you do double damage. Kill 100 enemies to get this.

  • Purchase 3 weapons.

     

    You can buy any 3 weapons in the mid-mission shopping or just complete the game on any difficulty to get this achievement as all primary weapons will unlock.

  • Kill 30 enemies using the Riot Shield melee attack

     

    While holding the riot shield, ask the AI to hold his position and advance yourself towards the enemy. Press when close to melee them. Melee 30 to get this achievement.

  • Collect all of the information cases in the entire game.

      

    Afghanistan - 3 briefcase
    Iraq - 3 briefcase
    Aircraft Carrier- 3 briefcase
    China - 3 briefcase
    Miami - 2 briefcase

    You get a cash reward for picking up the briefcases and they can only be collected once. It disappears in future playthroughs once its collected. You can check 'Objective' in the pause menu to see how many you have collected for the level. Collection is accumulative, ie, you don't have to collect all in 1 playthrough.

    Rough locations:

    Afghan
    #1: Behind the first M-11 missile is a small uphill path, follow it all the way to the end.
    #2: After encountering the 1st heavy armor guard in the mission (a cutscene plays showing him walking out of a door), kill him and all the guards and search the platform area. It's up past a short set of stairs at the back of the platform.
    #3: In the area just outside of Brian Hick's cell, go all the way to the back to get this one.

    Iraq:
    #1: Right before ascending the ladder to take out Ali Youseff's Lieutenant's Helicopter, look around at the bottom of the ladder to find this.
    #2: When you're asked to call in the air-strike on the bunker, run to the tent nearest to the huge wall dividing the area (there are some sentry towers near the wall), it's on the side of the tent facing the wall.
    #3: In the final area of the mission before meeting Ali Youseff, there are some metal platforms with guard on it. Kill them all, climb up the small steps to the 2nd level of the platform, and then the ladder to the 3rd level to find this.

    Aircraft Carrier:
    #1: On the main deck of the ship after you land, run towards behind control tower and then to the right to find this on a platform on the side of the ship.
    #2: In one of the hangars, you have to operate one of the planes to blow through a door (a heavy armored guard appears once the door is blown). Search around the wall closest to the door. It's behind some missiles.
    #3: In the final hangar, after activating the missiles to sink the ship, look around at the back right of the hangar to find a basketball court. It's behind the basketball hoop closest to the hangar wall.

    China:
    #1: Once you arrive at the dam, head up the stairs towards the first control panel. Look across the dam to see a similiar structure directly opposite. The briefcase is there.
    #2: Once you arrive at the village, co-op snipe the 2 guards and take the right path. At the first house you can enter on the path, head to the 2nd floor to get this.
    #3: After the only Back-to-Back sequence in China, do not enter the factory. Search outside near the back outside the factory (it's behind a dump) to find this.

    Miami:
    #1: After the gates to the luggage area are opened, you have to run to the 2nd floor to operate a control panel. There's an office right before the control panel, search around the back of the office to find this.
    #2: On the 3rd floor of SSC tower where you have to jump onto the lift, ignore the lift and keep running forward to the back of the floor to find this. It's directly opposite and across the staircase that you came up on.

 

Secret achievements

  • Completed Mission 1 as Contractor or higher.

     

    See "Mission 6 Complete".

  • Completed Mission 2 as Contractor or higher.

     

    See "Mission 6 Complete".

  • Completed Mission 3 as Contractor or higher.

     

    See "Mission 6 Complete".

  • Completed Mission 4 as Contractor or higher.

     

    See "Mission 6 Complete".

  • Completed Mission 5 as Contractor or higher.

     

    See "Mission 6 Complete".

  • Completed Mission 6 as Contractor or higher.

     

    To get this you have to complete each mission on Contractor or higher. The 6 missions are:
    1. Somalia
    2. Afghanistan
    3. Iraq
    4. Aircraft Carrier
    5. China
    6. Miami

DLC: SSC Challenge Map Pack

There are 4 achievements with a total of 100 points

  • Win every stage of a ranked three round SSC Challenge match

    Win every stage of a ranked three round SSC Challenge matchThis is unlocked when you and your partner win 18 out of 18 'stages' in a three round SSC challenge. There are 6 stages a round and the end of each stage is marked with a claxon and confetti going off. This could be done legit pretty easily but can also be done at the same time as when your boosting partners are going for the "SSC Challenge Marksman" achievement.
  • Destroy 500 barrels in ranked SSC Challenge matches

     
    This takes the longest out of the 4 DLC achievements simply as you only get a few barrels a stage. The fastest way to do this is to boost it with 3 others on the Warehouse 2 level. There are about 15 barrels right at the end of it that continuous respawn after about 20 seconds. If all four of you run to the end and then take it in turns to blow up the barrels (It only takes one shot as they are so close together) then you should have this in about 15-20 minutes.
  • Win a ranked SSC Challenge match

     
    If boosting then you should get this with 'True SSC Challenger', if not, then you'll get this naturally within a few games.
  • Achieve 75% accuracy at the conclusion of a ranked three round SSC Challenge match

     

    This achievement is given for, obviously, hitting 75% of your shots through out a 3 round challenge. (After 3 rounds a conclusion screen will pop up. Its the screen which says red/blue team wins.)

    Its virtually impossible to win and get over 75% accuracy so you're pretty much doomed to a loss if you want to get this. Here's what I did. Simply shoot the first target of the level once and then sit there. Do this for all 3 rounds and you're set. Achievement unlocked. The other team will indefinately get 'True SSC Challenger' if you use this technique so make sure you have someone who will return the favour.

DLC: Veteran Map Pack presented by Pontiac

There are 6 achievements with a total of 150 points

  • Buy the 'pack 8' gun pack in a multiplayer ranked match

     
    Ok so this is an online one, and despite what most people think, you can do it on any map. Not just the new map. Now for this achievement you have to buy weapon pack 8. Just do bounties on any map because bounties makes the most money and once you have $475,000 you can buy weapon pack 8. Once you have that amount or more head over to any weapon station, select pack 8 and buy it. The achievement will instantly unlock.
  • Destroy 300 destructible objects in Mission 7,8

    You must destroy 300 destructible objects. Very easily done on Level 8. It will take about 1.5-2 playthroughs of level 8 to do this. Almost anything can be destroyed from fire extinguishers to electrical boxes, to chairs to laptops to TV's etc. In the level there will be a massive fight in an office area, there will be tons of offices on the main room and in side rooms with plenty to destroy (laptops, chairs, clocks, TV's) and then there will be another fight in Dalton's main room before the vault where you will be a huge screen with Tyson and Rios' face on it. That huge screen has 48 individual screens which can all be destroyed. There is nothing more to really say for this achievement though, just shoot anything that looks like it can be destroyed. You can also find an area, destroy everything than die and come back and keep rinsing and repeating. But after a maximum of 2 playthroughs of the level destroying everything you see you should have it. I got it in 1 and a half playthroughs. It unlocked on my second playthrough in the massive TV room with Tyson and Rios' face on the screen. Oh yea and also if you are doing co-op you must each destroy 300 objects, you can't get 150 than have your partner get 150, each person must destroy 300.
  • Kill Dalton in less than 40 seconds

     
    You must kill Dalton in under 40 seconds. Easiest done on recruit in co-op.
     
    Once the fight with Dalton starts have both ppl use PMK's or if you can't shoot well enough with it then use AK-47's. You must knock him off the bridge within 10-12 seconds max, if you have to reload or if he walks too far to the right, it has taken you to long. Once you do this and he is knocked off, immediatley after the cutscene take out your sniper, use the M107, and have both people instantly start firing headshots at Dalton, he should be across the room, once the cutscene is done he will directly across the room from you. It might help to take 2-3 steps to the left to get a clearer shot. If you both hit him with 2-3 headshots you should make it in under 40 seconds. The achievement should pop up about 2 seconds after he dies so you will know.
     
    Now this is a very difficult achievement, you won't get it quickly. you and a partner will have to practice this many times. The most key part is being able to knock Dalton off the catwalk in about 10 seconds, 12 max!! Try to get him before he goes past the first bend of the catwalk. Just open fire right away with a PMK or Ak-47, me and my friend used Ak-47's but PMK does more damage but is less accurate. To get the headshots you will need to get lucky. Sometimes Dalton will run and hide, but right when the cutscene ends you will have a few seconds where he is out in the open shooting at you and if you get lucky he might even stop to reload before running to cover. You have to have your hand on the LB button in the cutscene getting ready to swtich to sniper. Once that scene ends run 2-3 steps to the left if you need to and instantly line up a few headshots. Like I said I got about 3 off on him and my friend got about 2-3. The headshots are key.
  • Final blow to Dalton is a headshot with a pimped .44 MODEL 29 handgun

     
    You must kill Dalton with a pimped .44 model 29 handgun. First equip that specific handgun and make sure the appearence is pimped. Then start a co-op game on Mission 8 on recruit. Once you get to Dalton try to get him down to about 2 bars of health, maybe less, once done get one partner to draw enough aggro to go into 2X damage mode. Make sure you are close to Dalton once in stealth mode, once in stealth mode run over to Dalton and shoot him repeatedly in the head with the pistol. When I did this I shot him about 5 times and he didn't die although once stealth mode ended I shot him once more and I got it. So I don't think you can get it in stealth mode but once stealth mode is over he should have like no health so you can just shoot him in the head. The trick here is to make sure the final blow that kills him is a headshot with the pistol. So there are a bunch of various methods to do this. Just do what works for you.
 

Secret achievements

  • Completed Mission 7 as Professional.

     
    You must beat this mission on Professional for the achievement. The mission is called "Kiev" and is pretty easy if done with a partner online thorugh co-op. The only semi-difficult part people seem to have trouble with is the back to back. For the back to back, try to stay on the sides it starts you on, don't keep turning around because that will confuse you. Stay on your side and take out the enemies quickly. Other than this the level is pretty easy. I have head reports of people putting the difficulty to recruit for the back to back, than afterwards switching back to Professional and still getting the achievement but I have not tried this so I can not confirm it.
  • Completed Mission 8 as Professional.

     
    You must beat this mission on Professional for the achievement. The mission is called "Miami Alternate Ending" and is not terribly hard if done with a partner in online co-op. Mission 8 is not terribly hard until the end where you face off against Dalton. To defeat him make sure your both packing stingers. It should take about 4 rockets to knock him off the catwalk as long as each one was locked on. To easily pull this off make sure once the cutscene ends you run out side of the vault and shoot the stingers from outside the vault door, Dalton will keep circling around so take your time and wait until he walks into your line of sight. Once he is knocked down a cutscene will start. After it ends run imeediatley to one of the little bunkers, they are where all those electrical units are and they are lower down and provide great cover. WATCH OUT for a guy on the second floor who will be firing rockets at you, try to take him out quickly. As for Dalton turn on your GPS to see where he is, try chucking grenades at him and shoot him when he occasionally pops out of cover, try to keep moving around though from "bunker" to "bunker". What my friend and I did was eventually he got into 2X Damage mode and I was in Stealth mode, we were both close to Dalton so he started firing on Dalton with 2X Damage and I ran over in Stealth and started firing into his head. I suggest using the gun with the most damage which is the PKM, as your primary weapon. Anyways once your stealth/2X damage mode is done you should have Dalton down to literally no health if not dead, if this is the case just keep shooting him once the mode ends, and he should die. He died for my friend and I literally once my stealth mode was done.

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