Complete mission I.2 - Retreat.
Revive an incapacitated Buddy.
Complete mission I.1 - Counter-Attack.
Defeat a Helghast soldier with a melee attack.
Collect $1000 Vektan in a mission.
Unlock all trophies in Killzone: Liberation.
Complete mission III.2 - Ambush.
Complete mission III.3 - Catastrophe.
Complete mission III.4 - Pursuit.
Complete mission IV.1 - Infiltration.
Complete mission IV.2 - Revelation.
Complete mission IV.3 - Confrontation.
Complete mission IV.4 - Liberation.
Complete 4 Challenge Games with a bronze medal or better.
Complete 12 Challenge Games with a bronze medal or better.
Complete 24 Challenge Games with a bronze medal or better.
Earn 1 gold medal in a Challenge Game.
Earn 10 gold medals in Challenge Games.
Equip a weapon with three abilities.
Collect $44000 Vektan in missions.
Defeat a Helghast soldier with a Missile Launcher.
Defeat a Helghast soldier with an M3 Revolver.
Defeat a Helghast soldier by running them over.
Defeat a Helghast soldier with a Spider Mine.
Complete mission I.3 - Evacuation.
Destroy an enemy tank on foot.
Defeat 10 enemies with Frag Grenades.
Defeat 50 enemies while you are in a vehicle.
Defeat 100 enemies on foot.
Complete mission I.4 - Sabotage.
Complete mission II.1 - Approach.
Complete mission II.2 - Diversion.
Complete mission II.3 - Assault.
Complete mission II.4 - Breakout.
Complete mission III.1 - Reconnaissance.
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