Weapons, Items, Misc.
Stockpile - 30
Obtain all available weapons.
New weapons can be obtained in two ways, either by purchasing them from Item Management or picking them up in a Chapter (only certain weapons can be obtained this way).
M92F - Chapter 1-1
M93R - Fully Upgrade M92F
Ithaca M37 - Chapter 1-2
M3 - Chapter 3-3
Jail Breaker - Chapter 6-1
Hydra - Fully Upgrade Ithaca M37
AK-74 - Chapter 5-1
H&K MP5 - Chapter 2-1
SIG 556 - Chapter 5-2
S75 - Chapter 2-1
H&K PSG-1 - Chapter 5-3
S&W M29 - Chapter 3-1
S&W M500 - Fully Upgrade S&W M29
Grenade Launcher - Chapter 4-1
Rocket Launcher - Chapter 3-1
Gatling Gun - Fully Upgrade ZV61
Longbow - Fully Upgrade S75
Take It To The Max - 30
Completely upgrade all weapons.
To unlock all upgrades for weapons you must first complete the game on any difficulty, you will need in excess of 1M Gold to purchase and upgrade all weapons. At present the fastest way is the Egg Glitch. Other methods include runs through Chapter 4-1.
Exploding Heads - 15
Pull off 20 headshots.
Simple, aim, shoot, BOOM! HEADSHOT! 20 of these as you progress through the game and the achievement is yours.
A Cut Above - 15
Defeat 5 enemies with the Knife.
If you're feeling brave you can start taking on Majini with the knife right from the start. Other wise in Chapter 4-1 you can find spiders on the walls which you can slice.
Cattle Prod - 15
Defeat 30 enemies with the Stun rod.
This weapon can be purchased for 3K Gold. You can then either run riot throughout the game or head back to Chapter 1-1, after your first encounter with the Majini you burst through the window and as you head forward you encounter a mob which has over 30 infected.
Crowd Control - 15
Defeat 30 enemies with the Gatling gun.
To aquire the Gatling Gun you first need to fully upgrade the VZ61 Machine Gun, complete the game and then you can purchase it for 50K Gold. As above you can return to Chapter 1-1 and take out your 30 there.
Bull's Eye - 15
Defeat 30 enemies with the Longbow.
To aquire the Longbow you first need to fully upgrade the S75 Rifle, complete the game and then you can purchase it for 50K Gold. You need to select Sheva as your character and as above you can return to Chapter 1-1 and take out your 30 there.
Get Physcial - 15
Defeat 20 enemies with physical attacks.
When you shoot an enemy enough he will step back, at this moment you'll see a on the screen that says either "Hook", "Straight", or if he is on the floor it will say "Stomp". Once you preform the action the Majini should be dead. Repeat 20 times and done.
Thanks to III Will III.
Lead Aspirin - 30
Defeat a Majini with a headshot while it's jumping.
Chapter 3-2, after you've taken out the initial wave of Majini head down and they'll take out the bridge. Stay on your side for the moment at they will come to you jumping across the platforms. With an upgraded Shotgun just aim up and pull the trigger when they're jumping across to you.
Fireworks - 15
Shoot an enemy Molotov cocktail, dynamite stick, or hand grenade.
Chapter 2-1, you'll have an encounter with the dogs and then move round the containers and drop down. Here will be a few more dogs and a big guy Majini, look on top of the container behind him and you will see a Majini with explosives in his hand. Shoot it and you're done.
Be The Knife - 60
Deflect a bow gun arrow with your knife.
Chapter 2-1 will be the first time you encounter a Majini with a crossbow, there is no trick here. Just get your timing right and this achievement will be yours.
Meat Shower - 15
Defeat 3 Majini with one grenade or proximity bomb.
End of Chapter 1-1 will be your best bet, wait until you get a group of Majini and throw a Hand Grenade at their feet and boom!
Go Into The Light - 15
Defeat 2 enemies with one flash grenade.
Beginning of Chapter 3-3 make sure you have a Flash Grenade as when you drop down two of the enemies are Type 2 Plagas so shoot everyone in the head. Once those two are exposed throw the Flash Grenade and it'll take them out.
Originally Posted by F Stumbleduck
One tip for "Go Into the Light": it works the way described in the guide, but if you want a slightly easier approach just wait until you encounter the groups of spiders. These guys die instantly with flashbangs, so I found it easiest to do it to them.
Ride The Lightning - 15
Defeat a Majini using the electric current from a transformer.
Again, end of Chapter 1-1. Once the Executioner knocks down the gate run out past him and look up to the left to see the Transformer (looks exactly like the achievement picture). Shoot it down once a Majini is near.
Stop, Drop, & Roll - 15
Defeat 3 Majini at once by setting oil canisters on fire.
Yet again, end of Chapter 1-1 when facing off against the villagers and the executioner, wait until the executioner breaks down the barrier and run forward noting the oil barrels that you pass on your left. Turn around (make sure there is a nice distance between you and the barrels) and wait for some villagers to start running after you and shoot the barrel.
Baptism By Fire - 15
Defeat 3 Majini at once with a drum or gas tank explosion.
Chapter 2-1, after you take out the oncoming truck Majini will follow and there will be barrels left either side of the bridge. Wait until they're near and blow them up.
There are other opportunities throughout the game but this is the method I used.
Drive By - 30
Stop an armored truck by taking out the driver.
Chapter 2-3, after the quick time event where you press + a truck will appear from the left. Dispose of this normally and another truck will now be on your right hand side, this is the easiest truck to get the driver. Shoot out the armour on his door window and he'll be exposed for a quick kill.