Full list of all 50 Medal of Honor achievements worth 1,000 gamerscore. It takes around 30-35 hours to unlock all of the achievements on Xbox 360.
Fire 1000 bullets in a round (awarded at end of round)
Play Sector Control
Reach level 8 in one class
Play two hours of Combat Mission
Play Objective Raid
Get 1000 support points
Play two hours of Team Assault
Be top 3 on the scoreboard ten times
Play online for 2 hours
Play Team Assault
Use each offensive support action once (awarded at end of round)
Deploy a missile strike support action (awarded at end of round)
Reach level 4 in any class
Play online for 15 minutes
Play once as each class (min 2 min)
Reach level 2 in any class
Play Combat Mission
Play two hours of Sector Control
Play two hours of Objective Raid
Reach top level in one class
Singleplayer: Complete First In
Singleplayer: Complete Breaking Bagram
Singleplayer: Complete Running with Wolves...
Singleplayer: Complete Dorothy's a Bitch
Singleplayer: Complete Belly of the Beast
Singleplayer: Complete Gunfighters
Singleplayer: Complete Friends From Afar
Singleplayer: Complete Compromised
Singleplayer: Complete Neptune's Net
Singleplayer: Complete Rescue the Rescuers
Singleplayer: In First In, Kill the Hostage Taker with a Head Shot
Singleplayer: In Breaking Bagram, destroy 2 vehicles with a single 2000 lb Laser Guided Bomb
Singleplayer: Jump 7.5 meters high on the ATV
Singleplayer: In Dorothy's a Bitch, destroy the entire AQ Camp with the AC-130
Singleplayer: In Belly of the Beast, defeat the DShK in under two minutes
Singleplayer: Destroy 30 buildings in Gunfighters Village
Singleplayer: While long range sniping, hit one of every bodypart
Singleplayer: In Compromised, get 15 kills with the M60
Singleplayer: In Neptune's Net, eliminate 13 enemies without alerting anyone
Singleplayer: In Rescue the Rescuers, chop down 5 trees with the Minigun
Singleplayer: Finish the game on Easy, Normal or Hard
Singleplayer: Finish the game on Hard
Singleplayer: Finish every level in the game on Tier 1 Mode under par time
Singleplayer: Achieve 20 total knife kills
Singleplayer: Get a total of 30 pistol kills
Singleplayer: Get 7 headshots in a row with any weapon except the long range sniper rifle.
Singleplayer: Kill 5 enemies at once with a single hand grenade
Singleplayer: Finish all of Dante's missions
Singleplayer: Finish all of Rabbit's missions
Singleplayer: Finish all of Deuce's missions