Here is the full list of all 35 Far Cry Instincts Predator achievements worth 1,000 gamerscore.
100 Traps kills in any Multiplayer Game Mode
1000 Total Kills reached in any Multiplayer Game Mode
150 Feral punch kills reached in any Multiplayer Game Mode
200 Grenade kills in any Multiplayer Game Mode
100 Road kills in any Multiplayer Game Mode
300 Headshots in any Multiplayer Game Mode
10 Kills in Multikill in any Multiplayer Game Mode
50 games in Predator Mode won
300 games in whatever Mode won
50 games in Capture the Sample Mode won
50 games in Seek n' Secure Mode won
50 games in Team Chaos Mode won
All online Game Mode won once
Predator Mode winner once
Seek n' Secure Mode winner once
Steal the Sample Mode winner once
80 hours played in Multiplayer Mode
50 games in Chaos Mode won
Team Chaos Mode winner once
Chaos Mode winner once
Finish the Instincts Story at Rookie difficulty level
Finish the Expansion Story at Hunter difficulty level
Finish the Instincts Story at Predator difficulty level
Accomplish 50 Trap kills in any solo mode
Accomplish 100 headshots in any solo mode
Accomplish 40 Stealth kills in any solo mode
Accomplish 80 Feral Punch kills in any solo mode
Finish the Instincts Story at all difficulty levels
Find all of Doctor Krieger's lost research dispatched on every map from both Stories
Finish the Expansion Story at Predator difficulty level
Evolution Story completed at all difficulty levels
Finish the Instincts Story and the Evolution Story
Finish the Instincts Story and the Evolution Story at all difficulty levels