Beat the game on "I am death incarnate!" difficulty or higher

Beat the game on "Call me Terror-Billy!" difficulty or higher

Capture the Ausmerzer

Decipher an Übercommander's location using the Enigma Machine

Kill Hitler during the Aerostat Audition

Fully upgrade a weapon

Get a new body

Find Area 52

Recruit Grace's group

Max a perk

Stop the Nazi signal from Section F

Perform a takedown while in the wheelchair