Full list of all 47 Army of TWO achievements worth 1,250 gamerscore.
The base game contains 37 achievements worth 1,000 Gamerscore, and there are 2 DLC packs containing 10 achievements worth 250 Gamerscore.
All achievements
Achievements they've won
Achievements they've not won
Complete all missions as a Professional.
Complete a ranked match without ever needing to be revived.
Kill 25 enemies total using RPGs.
Finish playing a versus ranked match.
Win a ranked match without purchasing any additional weapons.
Complete all missions with the Partner AI.
Kill 250 enemies total using Machine Guns.
Kill 100 enemies while in the power mode of Overkill.
Kill 75 enemies while in the stealth mode of Overkill.
Kill 250 enemies total using SMGs.
Kill 250 enemies total using Shotguns.
Kill 25 Martyrs by shooting the Bomb Packs on their chests.
Continue playing to unlock this secret achievement.
Kill 30 enemies using the Riot Shield melee attack
Earn one million dollars in total over the course of campaign mode.
Kill 100 enemies total using Sniper Rifles.
Kill 150 enemies total using Handguns.
Kill 25 Heavy Armor enemies.
Purchase the MP7, M134, DAO-X Protecta, MGL MK-X, and the M107 Light Fifty.
Kill 5 enemies total using Co-op Snipe.
Drag and heal your partner 25 times.
Kill 50 enemies total in Back-to-Back.
Purchase every mask variant.
Purchase 3 weapons.
Kill 50 enemies total using the Melee Attack.
Kill 250 enemies total using Assault Rifles.
Spend 1 minute straight at full Aggro.
Heal your partner for the first time. Training does not count.
Kill 50 enemies total in Co-op Riot Shield.
Complete 20 minor objectives in a ranked match.
Earn one billion dollars in total in ranked matches.
Collect all of the information cases in the entire game.
Win every stage of a ranked three round SSC Challenge match
Destroy 500 barrels in ranked SSC Challenge matches
Win a ranked SSC Challenge match
Achieve 75% accuracy at the conclusion of a ranked three round SSC Challenge match
Final blow to Dalton is a headshot with a pimped .44 MODEL 29 handgun
Buy the 'pack 8' gun pack in a multiplayer ranked match
Completed Mission 7 as Professional.
Completed Mission 8 as Professional.
Destroy 300 destructible objects in Mission 7,8
Kill Dalton in less than 40 seconds