Complete the following achievements to unlock Xbox Live Gamerscore points.

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