Full list of all 24 Sniper: Ghost Warrior achievements worth 1,000 gamerscore. It takes around 20-25 hours to unlock all of the achievements on Xbox 360.
Finished game on Normal difficulty.
Finished game on Hard difficulty.
Act IV Completed.
Finished game on Easy difficulty.
Collected all secrets.
5 High-Voltage cable lines broken.
Act III Completed.
Act II Completed.
30 enemies killed with browning gun.
2 enemies killed with one shot.
10 enemies killed with throwing knives.
All enemies on riverside in "Weaken The Regime" level killed.
Act I Completed.
100 headshots delivered.
2 enemies killed with one grenade.
50 headshots delivered.
Enemy killed by the wall.
15 enemies killed in concentration mode.
10 birds killed.
2000 people killed.(Multiplayer)
50 rounds won.(Multiplayer)
500 people killed with sniper rifle.(Multiplayer)
250 people killed with sniper rifle.(Multiplayer)
250 people killed with pistol.(Multiplayer)