Help all the patients as Dr. Pilgor

Sit through the whole history documentary

Experience the entire Black Meze tour

Reach the "Maria" ending.

Destroy what you don't need.

Reach the Lakeview Hotel.

Kill Eddie.

Defeat the Abstract Daddy.

Kill at least one enemy with Wooden Plank, Steel Pipe, Handgun, Shotgun and Rifle in a single playthrough.

Reach Commander (Level 55) in Multiplayer while playing online.

Reach the end of the long staircase.

Defeat the Flesh Lip.

Kill 75 enemies with melee weapons.