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