Counter-Strike: Source achievements

Rescue all hostages within 90 seconds

Collect three gifts dropped by opponents.

Survive damage from 5 different players within a round

Win 25 Pistol Rounds

KIll an enemy player with a gun they dropped that round

Spray 100 decals

Kill 200 enemy players with the Night Hawk .50c

Win a round while making no footstep noise and killing at least one enemy

Kill an enemy player who is leading the hostages without injuring any hostages

Kill a zoomed-in enemy sniper with a knife

Kill two enemy players while you are blinded from a flashbang

Kill 100 zoomed-in enemy snipers