Army of Two: The 40th Day achievements

50.38%

Pumpkin Patch

Shoot 2 enemies in the head with a single bullet

52.88%

Co-Op Sniper

Co-op snipe 5 enemies

52.88%

Gone Shopping

Complete Chapter 5 on any difficulty level

55.38%

Grenadier

Kill 3 or more enemies with a single grenade

55.58%

Old Faithful

Kill 400 enemies with assault rifles, submachine guns or shotguns

61.15%

Emergency Room

Complete Chapter 4 on any difficulty level

65.19%

A Decent Animal

Complete Chapter 3 on any difficulty level

72.69%

A Steep Descent

Complete Chapter 2 on any difficulty level

83.27%

Not What I Thought It Was

Complete Chapter 1 on any difficulty level

84.23%

The Pessimist

Make a negative coop morality choice

85.00%

The Optimist

Make a positive coop morality choice