Land your first 10 headshots.

Land 100 headshots.

Land 1000 headshots.

Land 10,000 headshots.

Complete 'Prologue - A False Hope' on Casual Difficulty.

Complete 'Chapter 1 - The Investigation' on Casual Difficulty.

Aquire the P99 handgun for the first time.

Aquire the P99-SP handgun for the first time.

Aquire the P22 handgun for the first time.

Aquire the Desert Eagle handgun for the first time.

Aquire the Colt Rainmaker for the first time.

Aquire the Ranger .357 for the first time.

Aquire the MP5-SMG for the first time.

Aquire the UZI-SMG for the first time.

Aquire the shotgun for the first time.

Aquire the M16 for the first time.

Aquire the Crossbow for the first time.

Aquire the Nailgun for the first time.

Aquire the Flamethrower for the first time.

Aquire the Fire Extinguisher for the first time.

Aquire the Grenade Case for the first time.

Aquire the Incendiary Grenade Case for the first time.

Aquire the Rocket Launcher for the first time.

Aquire the Crowbar for the first time.

Aquire the Pliers for the first time.

Aquire the Knife for the first time.

Aquire the Scalpel for the first time.

Aquire the Screwdriver for the first time.

Aquire the Axe for the first time.

Aquire the Baton for the first time.

Aquire the Hammer for the first time.

Aquire the Machete for the first time.

Aquire the Wrench for the first time.

Aquire the Chainsaw for the first time.

Aquire the Assault Shotgun for the first time.

Aquire the F2 Rifle for the first time.

Aquire the Kich's Axe for the first time.

Aquire the Steel Pipe for the first time.

Consume any item that restores hunger in the game.

Consume any item that restores thirst in the game.

Complete the mission.

Loot 50 items.

Loot 500 items.

Loot 5000 items.

Loot 50,000 items.

Complete 'Chapter 2 - An Unexpected Welcome' on Casual Difficulty.

Complete 'Prologue - A False Hope' on Survival Difficulty.

Complete 'Chapter 1 - The Investigation' on Survival Difficulty.

Complete 'Chapter 2 - An Unexpected Welcome' on Survival Difficulty.

Complete 'Prologue - A False Hope' on Hardcore Difficulty.

Complete 'Chapter 1 - The Investigation' on Hardcore Difficulty.

Complete 'Chapter 2 - An Unexpected Welcome' on Hardcore Difficulty.

Aquire the Gas Mask for the first time.

Survive for 5 minutes in radiation without taking any damage.

Survive for 30 minutes in radiation without taking any damage.

Survive for 2 hours in radiation without taking any damage.

Survive for 6 hours in radiation without taking any damage.