Army of Two: The 40th Day achievements

Save every hostage

Complete half the game on hardest difficulty

Collect $1,000,000

Kill 50 enemies with a melee or bayonet

Finish the game as best friends

Kill 150 enemies with pistols

Tie up 15 enemy combatants instead of executing them

Use 15 enemies as human shields

Kill 100 enemies with a sniper rifle

Heal your partner 10 times

Customize a primary weapon to high aggro

Complete the game on any difficulty level