There are several different suits you can unlock in Dead Space 2 for the PS3, Xbox 360, and PC. Here is the list of suits I’ve found so far, and how to find them.
Arctic Security Suit – Beat the game on Zealot difficulty to unlock it at the store
Elite Advanced Suit – You can find the schematic in New Game+ in Chapter 11 when the yellow lift with the Necromorphs reaches the top, turn around and it is on the ledge between elevator and wall
Elite Engineer Suit – You can find the schematic in New Game+ on Chapter 2, right before the first outer space section
Elite Security Suit – You can find the schematic in New Game+ in Chapter 9 after you exit the tram, search over the railing.
Elite Vintage Suit – You can find the schematic in New Game+ in Chapter 6 in the area where you fight the tank right before the end of the chapter.
Hacker Suit – If you have a Dead Space: Ignition save file it will be available at the store
Riot Suit – In the store during New Game+
Soldier Suit – Beat the game on Hardcore Mode to unlock it at the store
