Unlock Electra:
Complete Wolverines story on Medium and then pay 6000 dollars in the Comic Shop.
Unlock Iron Man:
Complete Wolverine's Long story then pay 9k in the shop.
Unlock The Wink:
Complete Electra's Story on short then Pay 7k at the shop.
Unlock Non-flaming Human Torch Costume:
Complete Human Torch's Medium then pay 5k at the shop.
Unlock Hazmat:
Complete Iron Man's Short Arcade then pay 8k at the Comic Shop.
Cool Finisher:
In Arcade or Play Now mode, you can finish your opponent off with an awesome finishing move. Get your opponent's health down very low, until the two "fists, webs, electric balls, syths, etc." on the touchscreen are blinking. Hit the one that is blinking, then follow up by hitting the other one (only once). You should see your character killing your opponent in a red haze. Note: This trick may not work on some of the characters, but is effective against Elektra, Dare Devil, Human Torch, and Spider-Man.
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