Full list of all 58 Army of TWO: The 40th Day achievements worth 1,250 gamerscore.
The base game contains 50 achievements worth 1,000 Gamerscore, and there is 1 DLC pack containing 8 achievements worth 250 Gamerscore.
Collect All Weapons and Weapon Parts
Unlock all Potential Futures
Finish the game in a fractured friendship
Make only positive choices
Shoot all Maneki Neko cats in the game
Save every hostage
Charge through 20 enemies
Kill 25 enemies with a quick draw from mock surrender
Survive an entire level in one session without being downed on normal difficulty or above
Kill two enemies with simultaneous Quick Draws while in Co-op Mock Surrender
Allow your partner to snipe 5 guys while in Mock Surrender
Kill 50 enemies with a melee or bayonet
Shoot 2 enemies in the head with a single bullet
Tie up 15 enemy combatants instead of executing them
Make a positive coop morality choice
Collect $1,000,000
Finish the game as best friends
Complete the Game on Contractor Difficulty
Complete the Game on Any Difficulty Level
Make only negative choices
Listen to all of the Radio Broadcasts
Use 15 enemies as human shields
Complete Chapter 5 on Any Difficulty Level
Kill 150 enemies with a pistol
Kill 100 enemies with a sniper rifle
Complete Chapter 4 on Any Difficulty Level
Kill 400 enemies with assault rifles, sub machineguns or shotguns
Co-Op Snipe 5 enemies
Beat your partner at rock, paper, scissors three times in a row
Kill 3 or more enemies with a single grenade
Heal your partner 10 times
Complete Chapter 3 on Any Difficulty Level
Customize a weapon to high aggro
Complete Half the Game on Contractor Difficulty
Complete Chapter 2 on Any Difficulty Level
Build a gun using 3 homebrew parts
Complete Chapter 1 on Any Difficulty Level
Make a negative coop morality choice
Versus: Invite a friend before joining a lobby to play a public match
Versus: Kill both members of a single partnership during a public match
Versus: In public matches, kill a player with the primary or secondary weapon from every weapon kit
Versus: Create a custom facemask online (www.armyoftwo.com) and wear it in a public match
Versus: Kill 10 players with headshots on a single map in a public match
Versus: Earn the highest partnership score in a Co-op Deathmatch, Control or Warzone public match
Versus: Kill a player with every weapon, including special weapons, in public matches
Versus: In a public match, survive an Extraction map without suffering a single death on your team
Versus: Win a public match on every map in Co-op Deathmatch, Control and Warzone
Versus: Complete all 16 rounds of an Extraction game in a public match
Versus: Revive your partner and perform a partner reload during the same public match
You need to kill 6,666 people in Campaign
Survive chapter 9 and while you're at it, throw a stick in the FDI's spokes.
Negative morality choice. Choose to kill the traitor.
Positive morality choice. Choose to let the traitor live.
Escort all hostages to safety.
Follow the intel trail and take your shot at Jonah. Just be prepared for the consequences.
Kill the FDI leader. Could it really be this easy?
Protect Dr Wu from the FDI foes.
Find one new mask in The Chapters of Deceit.