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Old 11-13-2011, 12:18 PM   #2
DarkReign2021
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Join Date: Jan 2010
Location: Earth, Sol System, Milky Way Galaxy
Posts: 3,459

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General Tips:
  • All achievements can be earned in cooperative play. However, certain achievements can only be earned one person at a time, so certain maps will have to be played twice in co-op.
  • Skulls do not deactivate Achievements, so the use of the Bandana skull for Infinite ammo will make all of these achievements easier to earn.
  • Most of the achievements can be earned easily with the use of a second player on a dummy controller. Leave the main controller (the one tied to your account) inactive except when you have to kill a certain number of something and use it as a HUB for you to respawn at when player 2 dies. This prevents the need of constantly respawning



Achievement Listing
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Note: The achievements are listed in order of possible completion, so anybody interested in doing these in a single run can consult this list so they can be sure they don't miss anything.

Looks like the Oddball 10
Found your first Campaign Skull

Co-Op Attainable: Yes

See “Headhunter” for more details

For a guide to the Skulls and Terminals, refer to:
http://www.xbox360achievements.org/f...d.php?t=344002

What have we here? 10
Found your first terminal

Co-Op Attainable: Yes

See “Dear Diary” for more details

For a guide to the Skulls and Terminals, refer to:
http://www.xbox360achievements.org/f...d.php?t=344002

Overshields are for sissies 10
Complete “Pillar of Autumn” on Legendary without picking up an overshield

Co-Op attainable: Yes
Dummy Controller: Yes

Set the difficulty to Legendary and push your way forward. There are 4 overshields on this level, 2 in each of the drop ships that dock onto the PoA, so they’re easy to avoid. I strongly advise the use of the Plasma Pistol to take out Elites shields and the pistol to finish them and kill the grunts. No Jackals or Hunters are on this level.

Walk it Off 25
Complete the level “Pillar of Autumn” on Legendary without picking up a health kit.

Co-Op attainable: Yes
Dummy Controller: Yes

This will be one of the tougher achievements in the game due to the tight corridors of the level. Your biggest saving grace is that there are no jackals on this level and your enemies do not use the Needler on this level. Heroic and Legendary also allow you to use grenades earlier on in the level, so the corridors make frags more effective against enemies. Look for side hallways whenever possible. They can sometimes lead you around certain fights.


He’s Unstoppable 20
Complete any level on Heroic or Legendary without taking Health Damage

Co-Op attainable: Yes
Dummy Controller: Yes

This one goes well with "Walk it off." Obviously if you can't pick up health packs, you don't want to lose any health at all. Kills two birds with one stone. If you prefer to do it separate, however, level 4 "The Silent Cartographer" is typically the easiest level to beat due to the excessive number of marines, warthogs, and rocket launchers they give you throughout the level.




Pillar of Autumn 25
Complete the level “Pillar of Autumn” on any difficulty

Co-Op attainable: Yes
Dummy Controller: Yes

Story Related; Cannot be missed

Standard Operating Procedure 10
Complete one level on Normal in Co-op mode.

Co-Op attainable: Yes
Dummy Controller: Yes


See “Bro Hammer” for more details

Brovershield 20
Complete one level on Heroic in Co-op mode.

Co-Op attainable: Yes
Dummy Controller: Yes

See “Bro Hammer” for more details

Bro Hammer 50
Complete one level on Legendary in Co-op mode.

Co-Op attainable: Yes
Dummy Controller: Yes

To complete the 3 co-op achievements in the game, pick any level and do whatever it takes to reach the end. You have infinite lives and no time limit, so you can work together with a friend or just have one person doing all of the work while the other hangs back as a respawner (This works well for dummy controllers.) The fastest way to do this in a single playthrough is to set the Pillar of Autumn to Legendary and beat it in Co-op, netting you all 3 at the same time and eliminating the need to repeat a level at a later time.

No-Fly Zone 10
Destroy 3 banshees on the level “Halo” on any difficulty

Co-Op Attainable: No. The player that is going for the achievement must kill all of the banshees. Sharing kills on Co-op will not work
Dummy Controller: Yes

There are 4 banshees to be found on this level. The first two attack immediately after crossing the bridge in the beginning of the level. The best way to destroy them is with the pistol, though the AI is programmed for the second one to flee after the first is destroyed, so you have to be quick about it. The other two will attack you after you save the marines in the first of the three regions. You’ll be attacked in the open plain area heading toward your second region. Neither will flee, however, so again, make short work of them with your pistol.

video added by Agusta1

How Pedestrian 25
Beat the level “Halo” without ever entering a vehicle

Co-Op attainable: Yes
Dummy Controller: Yes. Recommended.

This is going to be a long mission, but with no enemy vehicles to worry about, vehicle firepower isn’t necessary anyway. Get ready for a long walk though. The only issue you’re come up against is a large gap in the first part of the tunnel after getting the warthog drop. The only way across is to grenade jump across. Be sure to have a frag or plasma grenade handy to do this because you aren’t going anywhere otherwise.

In Co-op, having one player drive the warthog will allow the other person to eventually teleport over the gap without having to grenade jump.)

Halo 25
Beat the level “Halo” on any difficulty

Co-Op attainable: Yes
Dummy Controller: Yes

Story Related; Cannot be missed

All according to plan... 10
Kill all of the enemies in the first encounter on “Truth & Reconciliation” without being detected

Co-Op attainable: Yes
Dummy Controller: Not Necessary

Immediately after getting off of the dropship, head to the cliffside toward the back of the canyon, but stand back far enough to avoid being seen. There are 2 shade turrets, 2 elites, 2 Jackals, and a handful of grunts (mostly asleep) Start by eliminating the Elites, than the Jackals, than the turrets. After that it's just a matter of taking out the grunts scattered around the canyon.

Note: Whatever you do, do not leave the cliff-side or the marines will move in and blow your cover. Do not stop hunting for enemies until the marines move on their own. That signifies that your done.

video added by bblnx

Last edited by DarkReign2021; 03-08-2012 at 03:54 AM.
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