Here is the full list of all 46 Medal of Honor: Airborne achievements worth 1,000 gamerscore.
Played 20 consecutive ranked matches without getting a team kill
Upgraded all weapons in ranked matches
Got over 20 first place finishes in ranked matches
Came in first place on every map in any game mode in ranked matches
Got over 1,000 kills and 500 Objective Points in ranked matches
Got over 500 kills and 250 Objective Points in ranked matches
Got over 20 top three finishes in ranked matches
Was on the winning team for every map in ranked matches
Got 20 kill assists throughout a career in ranked matches
Killed an enemy player with a grenade while he was parachuting
Played every map at least once in a ranked match
Completed any operation without dying
Got 20 Team Points in a ranked match
Killed an enemy with a melee kick
Killed an enemy with a pistol melee attack
Got over 10 Objective Points in a ranked match
Killed an enemy player while he was parachuting
Got 10 Team Points in a ranked match
Recovered full health after being in verge of death state
Completed the game on Normal difficulty
Fully upgraded all weapons
Discovered all skill drop locations in the game
Completed the game on Casual difficulty
Got 10 headshots in a row
Discovered one skill drop location in each mission
Completed the game on Expert difficulty
Completed Der Flakturm
Fully upgraded five weapons
Killed an enemy while moving in iron sights
Touched down with a greased landing
Completed Operation Varsity
Completed Operation Market Garden
Completed Operation Neptune
Killed an enemy using sprint-melee
Earned a 5-in-a-row
Fully upgraded one weapon
Completed Operation Avalanche
Killed an enemy by kicking a grenade at him
Completed Operation Husky
Killed three enemies with a cooked grenade
Crouch-sprinted between cover objects
Got pushed out of the plane
Completed Jump Training
Touched down with a flared landing