Unlock Villain Concept Art:
To unlock Villain concept art you must play a game of Memorable Battle.
Play through Co-Op mode to unlock Carnage
While in the Helicarrier between levels enter one of the following.
|Up, Up, Down, Down, Left, Right
|Left, Down, Right, Right, Down, Left
||Unlock Green Goblin
|Right, Right Right, Up, Down, Left
|Left, Left, Right, Up, Down, Down