Here is the full list of all 24 Call of Duty: Modern Warfare II achievements worth 1,000 gamerscore.
Shoot three enemies while underwater in 'Wetwork'.
Rescue the hostages in 'Countdown' without the enemies firing their weapons.
Finish 'Alone' without firing a gun.
Drive five vehicle types in 'Violence and Timing'.
Reach the penthouse in 'El Sin Nombre' without killing anyone or triggering the alarm.
In 'Dark Water' advance 90 meters towards the front of the ship without touching the deck.
Reach Price using the first vehicle you hijack.
Open three safes in the Campaign.
Kill three Enemies with the Riot Shield in the Campaign or in Co-op.
While affected by one Flashbang, kill two enemies in the Campaign or in Co-op.
Shoot all the targets in the training area in 'Ghost Team'.
Kill the enemy in the porta-potty.
Reach the barge without being seen in 'Wetwork'.
Complete the CCTV sequence in four minutes.
Kill gassed or blinded enemies using a Molotov, Semtex and Frag in 'Prison Break'.
Finish all Campaign missions on Veteran or Realism difficulty.
Finish the Campaign on any difficulty.
Never trigger the alarm in 'Recon by Fire'.
Earn three Stars in 'Low Profile'.
Earn three Stars in 'Denied Area'.
Earn three Stars in 'Defender: Mt. Zaya'.
Complete 'Low Profile' without triggering any alarms.
Earn at least one Star in Co-op.
Find 20 intel fragments in Co-op.