Complete the game.
Complete Mission 11 - Deliverance.
Complete Mission 10 - Faith.
Upgrade the shotgun.
Kill 10 Butchers.
Upgrade your stealth kill weapon.
Complete Mission 9 - Father's Day.
Complete Mission 8 - Devan.
Upgrade your melee weapon for the third time. Yeah!
Upgrade your melee weapon again!
Acquire the grappling hook.
Execute 25 downed zombies.
Complete Mission 7 - Beauty and the Beast.
Kill 10 zombies with close range shotgun blasts.
Upgrade the pistol.
Acquire the gas mask.
Acquire the shotgun.
Kill 10 Spitters with a ranged weapon.
Complete Mission 6 - Stories of the Dead.
Kill 25 zombies with pistol headshots.
Recover to max health from minimum health.
Collect 25 ammo packs.
Kill 50 zombies with a melee weapon.
Kill 100 zombies in total.
Acquire the combat flashlight.
Upgrade your melee weapon.
Stealth kill 25 zombies.
Complete Mission 5 - A Fighting Chance.
Acquire the pistol.
Kill 10 enemies in a row without being detected.
Complete Mission 4 - Marathon.
Acquire the two-way radio.
Acquire your first melee weapon.
Complete Mission 3 - Echoes.
Acquire your first stealth kill weapon.
Acquire the rope.
Complete Mission 2 - One Less Boat.
Complete Mission 1 - Smooth Sailing.
Acquire the camera.
Complete the prologue.
Kill an airborne Bouncer.
Kill 5 Sirens while they are screaming.
Collect all lost stories.
Collect all research logs.
Collect all Charon's logs.
Collect all postcards.
Collect all snapshots.
Kill 5 enemies in 2 seconds.
Complete new game+.
Injure a single zombie with your melee weapon, the pistol and the shotgun, then stealth kill it.
Find all the underground secondary areas
Find the underground labs
Complete the underground labs
Acquire the walloper
Acquire the assault rifle
Kill 10 enemies at long range with the walloper
Kill 100 enemies with the assault rifle
Collect all of Ronald's logs
Kill a Dweller using an environmental hazard
Stealth kill a Dweller
