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