Collect all trophies
Achieve gold medal for this challenge map
Collect 64 gold items
Choose to save Annette
Collect all letters
Complete all nightmare levels
Complete the nightmare in chapter 2
Complete the nightmare in chapter 1
Complete the prologue nightmare
Complete game on I AM DEATH INCARNATE! (or ÜBER)
Complete game on ÜBER
Unlock the Eagle Eye perk
Complete game on any difficulty
Complete the nightmare boss level
Complete the nightmare in chapter 7
Unlock the Armor upgrade II perk
Collect 32 gold items
Unlock the Kampfpistole ammo storage upgrade perk
Unlock the Carry heavy machinegun perk
Choose to save Kessler
Complete the nightmare in chapter 6
Unlock the Armor upgrade I perk
Unlock the Tough Skin perk
Collect 5 letters
Complete the nightmare in chapter 5
Complete part one
Unlock the Health upgrade III perk
Unlock the Health upgrade II perk
Complete the nightmare in chapter 4
Collect 16 gold items
Escape Castle Wolfenstein
Unlock the Schockhammer clip upgrade perk
Unlock the Vampire perk
Unlock the Reload mash perk
Unlock the Ammunition upgrade perk
Unlock the Quick turn perk
Complete the nightmare in chapter 3
Unlock the Bombenschuss clip upgrade perk
Collect 8 gold items
Unlock the Grenade belt perk
Unlock the Health upgrade I perk
Infiltrate Castle Wolfenstein