Iron Man - Suits

Story mode missions will unlock One Man Army missions. One Man Army missions will unlock specific suits for the One Man Army missions.

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. Extremis is capable of stealth. It has a shockwave attack in place of grenades or missiles. It is very efficient and powerful.
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, where you must destroy four power couplings before any are repaired then defeat Horgan and his giant cannon. Hulkbuster is slow but can sustain massive amounts of damage. Its Repulsors are more like cannon shots and in place of grenades or missiles is a single cannon shot that hits a target, then a moment later creates an explosive shockwave. It is perfect for groups of enemies.

Successfully complete the game to unlock the Silver Centurion Xbox 360 and Ultimate PlayStation3 suits. The Ultimate suit is the equivalent of the Extremis but does not have stealth has a more powerful Unibeam and Gatling Repulsors that are weaker but acceptable.

Completion of Story mode unlocks all suits for replay of Story and Mission Archives in any game mode. Suits different from normal Mark 3 have fixed equipment that can be upgraded, but does not change weaponry or armor.

Easy One Man Army missions
In One Man Army missions, take out as many air units as possible quickly, especially jets as they are too fast to chase and difficult to shoot down. This is especially true in Arctic Battle or the One Man Army Mission 3 vs. Mercs, as the jets are difficult and required to complete the mission. Take them out
as they fly off the runway to defeat them effectively.

AIM-X mission: Easy completion
This is a very challenging mission, with anti-air defenses everywhere. Immediately go for the couplings. Take as little time as possible on defensive units. If you take your time destroying them and go on to other couplings, the couplings will be repaired and defenses will be reinforced. Immediately after their destruction, go to the center and destroy defenses. Hide under the platform to recharge your armor. Once the defenses are substantially diminished go to the top and strafe Horgan, keeping the cannon below and in front of you. When he charges his attack, drop behind the cannon. He will hit it and damage it. After a few times of doing this, not only will you defeat Horgan but also get the hero objective of destroying the cannon.

Suit parts:
As you unlock parts to your suit in Story mode, they will become usable in past missions in Mission Archive mode.

Listen to full "Iron Man" song:
After the game loads, select "Credits" at the main menu. You will now be able to hear the full "Iron Man" song.

Achievements:
Complete the following achievements to unlock Xbox Live Gamerscore points.

Sidekick 75 points: Complete all missions on Easy difficulty or harder.
Hero 75 points: Complete all missions on Normal difficulty or harder.
Super Hero 75 points: Complete all missions on Formidable difficulty.
Disarmed 25 points: Destroy stockpiled Stark weapons in the Escape mission.
City Protector 25 points: Destroy drones without civilian damage in the First Flight mission.
Decommissioner 25 points: Destroy all Prometheus missiles in the Maggia Compound mission.
In the Drink 25 points: Avoid civilian casualties in the Flying Fortress mission.
Tatyana, Interrupted 25 points: Protect the nuclear facility in the Arctic Battle mission.
Not a Scratch 25 points: Avoid harming the destroyer and its crew in the Lost Destroyer mission.
Power Saver 25 points: Avoid disrupting the city's power supply in the On Defense mission.
Shocking 25 points: Protect outlying occupied buildings in the Save Pepper mission.
Proton Shut Out 25 points: Prevent cannon attacks on civilian targets in the Island Meltdown mission.
Escape Velocity 25 points: Sever the tether before the satellite overloads in the Space Tether mission.
You're Fired 25 points: Destroy power regulators in the Iron Monger mission.
Excelsior 70 points: Complete Hero Objectives for all missions.
Ten Rings Obsoleted 25 points: Complete the One Man Army vs. Ten Rings challenge without an armor breach.
Maggia Obsoleted 25 points: Complete the One Man Army vs. Maggia challenge without an armor breach.
Mercs Obsoleted 25 points: Complete the One Man Army vs. Mercs challenge without an armor breach.
AIM Obsoleted 25 points: Complete the One Man Army vs. AIM challenge without an armor breach.
AIM-X Obsoleted 25 points: Complete the One Man Army vs. AIM-X challenge without an armor breach.
Air Superiority 15 points: Destroy all dropships before the Stark Gunship is stolen in the First Flight mission.
Road King 15 points: Destroy all convoy vehicles in less than 2 minutes in the Stark Weapons mission.
Launch Aborted 15 points: Destroy all Prometheus missiles within 10 minutes in the Maggia Compound mission.
Collateral Damage 15 points: Destroy a Prometheus missile by destroying a fuel truck in the Maggia Compound mission.
Personnel Vendetta 15 points: Defeat 20 soldiers in the Arctic Battle mission.
Overkill 15 points: Defeat a soldier using the Unibeam.
Smack down 15 points: Defeat Titanium Man before his second recharge in the On Defense mission.
Impenetrable 15 points: Complete a mission other than Escape or First Flight without an armor breach .
An Object in Motion 15 points: Destroy any target using a ramming attack.
Grounded 15 points: Successfully grapple and throw a plane.
Your Own Medicine 15 points: Damage or destroy another enemy while grappling a SAM launcher..
Long Shot 15 points: Damage or destroy another enemy while grappling a howitzer..
Hulk Smash 15 points: Successfully grapple an opponent in the Hulkbuster armor.
Ground Pound 15 points: Defeat an opponent using the ground pound in the Extremis armor.
Classic Confrontation 15 points: Defeat Titanium Man using the Classic armor.
Old School 15 points: Defeat Iron Monger using the Silver Centurion armor.
Pugilist 15 points: Complete any mission other than Escape without using weapons systems.
Eject 25 points: Spare the US fighter pilots in the Stark Weapons mission.
Guardian 25 points: Protect warehouse workers in the Maggia Factories mission.