Fantastic 4: Rise of the Silver Surfer Cheats

Character unlockables
Here are some of the unlockables that you can obtain by finding tokens throughout the game.

1990's fantastic four: Find 12 tokens
2000's fantastic four: Find 12 tokens
Comc covers #1: Find 4 tokens
Comic covers #2: Find 4 tokens
Game concept art: Find 4 tokens
Ultimate costumes: Find 12 tokens

Unlockables
Mainly just beat the game:

Hard Mode: Beat the game on Normal
Skrull Arena: Beat the game