Costumes...
	Infinite XP...

Costume	How to unlock
Big Time Suit	Clear a hideout.
Flipside	Finish a hideout.
Hornet Suit	Finish every race.
Ricochet Suit	Unlocked during the storyline.
Scarlet Spider (2012)	Finish a hideout.
Spider Armor Mk. II	Finish a hideout.
Spider-Carnage	Finish the main 14 story missions.
Spider-Man 2099	Finish a hideout.
Superior Spider-Man	Complete every Arcade Challenge.
Ultimate Comics Spider-Man	Finish a hideout.

Load the "Raid On Oscorp" mission. Proceed through the mission until you leave the air vents, and a cutscene will begin, which can be skipped. Stealth kill four enemies, and then disposed of the final enemy as desired. After defeating the last enemy, pause the game. Select the "Restart" option, then choose "Yes" to restart from the last checkpoint, which is where you leave the air vents. Repeat this process until you reach the desired suit level. Note: The max suit level is 8.