Accomplish the indicated achievement to get the corresponding number of Gamerscore points:

Complete Civil War (25 points): Complete all levels in the Civil War campaign.
Complete WW1 (25 points): Complete all levels in the WW1 campaign.
Complete WW2 (25 points): Complete all levels in the WW2 campaign.
Secret Mission (75 points): Locate and complete the secret mission at the end of the game.
Complete Darkest of Days (100 points): Complete all levels in the game on normal difficulty or higher.
With Chest Hair (200 points): Complete all the levels in the game on the highest difficulty.
Pistol Upgrade (100 points): Fully upgrade all pistol settings.
Rifle Upgrade (100 points): Fully upgrade all rifle settings.
Horse Puncher (100 points): Punch a horse in the face, killing it.
Ghandi Award (100 points): Complete a combat level without using any lethal attacks.
Rage Fists (100 points): Kill at least 25 NPCs with your bare hands.
Bomb Technician (25 points): Kill yourself with an explosive device.
Tethered Swimming (25 points): Die of suffocation underwater.