To unlock the following suits for Iron Man to use, complete the requirement listed.
| Suit | How to unlock |
| Classic | Complete the challenge "One Man Army vs. Mercs"
|
| Classic Mark I | Complete the challenge "One Man Army vs. AIM"
|
| Classic Mark II | Complete the challenge "One Man Army vs. Ten Rings"
|
| Classic Mark III | Automatically unlocked
|
| Extremis | Complete the challenge "One Man Army vs. Maggia"
|
| Hulkbuster | Complete the challenge "One Man Army vs. AIM-X"
|
| Ultimate | Complete Story Mode in its entirety
|
