Marvel Nemesis: Rise Of The Imperfects Codes -

Master Unlock cards:
Successfully complete campaign mode with a character with a "Gold" rank in each match to unlock their "Master Unlock" rarity card.

Characters:
Complete the indicated task to unlock the corresponding character.

Brigade: Complete Story mode as The Thing. 
Captain America: Complete Story mode as Fault Zone. 
Dr Doom: Complete Campaign mode with fifteen characters. 
Elektra: Complete Story mode as The Wink. 
Fault Zone: Complete Story mode as Wolverine. 
Hazmat: Complete Story mode as Magneto. 
Iron man: Complete Story mode as Johnny Ohm. 
Magneto: Complete Story mode as Solara. 
Paragon: Complete Story mode as Elektra. 
Solara: Complete Story mode as Spider-Man. 
Spider-man: Complete Story mode as Venom. 
Storm: Complete Story mode as Hazmat. 
The Wink: Complete Story mode as Magneto. 
Venom: Complete Story mode as Iron Man. 
Wolverine: Complete Story mode as Venom.