Complete Chapter 1 on any difficulty level

Complete Chapter 2 on any difficulty level

Complete Chapter 3 on any difficulty level

Complete Chapter 4 on any difficulty level

Complete Chapter 5 on any difficulty level

Use 15 enemies as human shields

Charge through 20 enemies

Kill 3 or more enemies with a single grenade

Kill 150 enemies with pistols

Kill 400 enemies with assault rifles, submachine guns or shotguns

Kill 100 enemies with a sniper rifle

Kill 25 enemies with a quickdraw from mock surrender

Kill 50 enemies with a melee or bayonet

Tie up 15 enemy combatants instead of executing them

Heal your partner 10 times

Co-op snipe 5 enemies

Allow your partner to snipe 5 guys while in mock surrender

Kill two enemies with simultaneous quick draws while in co-op mock surrender

Shoot 2 enemies in the head with a single bullet

Beat your partner at rock, paper, scissors 3 times in a row

Finish the game as best friends

Finish the game in a fractured friendship

Listen to all of the radio broadcasts

Collect $1,000,000

Customize a primary weapon to high aggro

Build a gun using 3 homebrew parts

Make a positive coop morality choice

Make only positive choices

Make a negative coop morality choice

Make only negative choices

Versus: Revive your partner and perform a partner reload during the same public match

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 either 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