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.
Act III Completed.
Collected all secrets.
2000 people killed.(Multiplayer)
250 people killed with pistol.(Multiplayer)
50 rounds won.(Multiplayer)
500 people killed with sniper rifle.(Multiplayer)
250 people killed with sniper rifle.(Multiplayer)
Finished game on Normal difficulty.
Finished game on Hard difficulty.
Act IV Completed.
Finished game on Easy difficulty.
30 enemies killed with browning gun.
Act II Completed.
5 High-Voltage cable lines broken.
10 enemies killed with throwing knives.
All enemies on riverside in "Weaken The Regime" level killed.
Act I Completed.
100 headshots delivered.
50 headshots delivered.
2 enemies killed with one grenade.
2 enemies killed with one shot.
Enemy killed by the wall.
15 enemies killed in concentration mode.
10 birds killed.