Iron Man is an action game based on the fictional character and movie of the same name. The game was developed by Secret Level and published by Sega. It was released on may 2, 2008. Below you will find a full collection of unlockables for Iron Man for PlayStation 3.

Unlockables:

Suits – complete the indicated tasks:

Mark II suit: One Man Army mission 1 (vs. Ten Rings), which is unlocked after Story mode mission 3 (Stark Weapons).
Extremis suit: One Man Army mission 2 (vs. Maggia), which is unlocked after Story mode mission 4 (Maggia Factories). The suit has a stealth capability and has a shockwave attack instead of grenades or missiles.
Classic suit: One Man Army mission 3 (vs. Mercs), which is unlocked after Story mode mission 7 (Arctic Battle).
Classic Mark I suit: One Man Army Mission 4 (vs. AIM), which is unlocked after Story mode mission 8 (Lost Destroyer).
Hulkbuster suit: One Man Army 5 (vs. AIM-X), which is unlocked after Story mode mission AIM-X. Hulkbuster is slow but can sustain massive amounts of damage.
Ultimate suit: Complete the game.