The Call of Duty: Modern Warfare II Add-on for Call of Duty has 24 achievements worth 1,000 gamerscore.
Kill 3 enemies while underwater in 'Wetwork'
Rescue the hostages in 'Countdown' without the enemies firing their weapons.
Finish 'Alone' without firing a gun.
Drive 5 types of vehicles in 'Violence and Timing'.
Reach the penthouse in 'El Sin Nombre' without killing anyone.
In 'Dark Water' advance 90 meters of ship deck without touching the deck.
Reach Price using the first vehicle you hijack.
Open three Safes in the Campaign.
Kill 3 Enemies with the Riot Shield in the Campaign or Co-op.
While affected by one flashbang kill two enemies in the Campaign or 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 4 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.