Complete Volcano Mission.
Kill the Traitor with a melee attack.
Defeat Krieger.
Complete Dam level without equipping a weapon on person (mounted weapons are allowed).
Do not let Valerie die even once in Swamp.
Complete Swamp Mission.
Kill Crowe with a headshot.
Complete Rebellion Mission.
Collect the Key card in Research without alerting anybody!
Complete Steam Mission.
In Bunker, make the Mercs and the caged Trigens mingle with each other
Score 1 kill each from a land, maritime and aerial vehicle.
Complete Treehouse without dying.
Complete Pier Mission.
Get a headshot kill from 500m.
Fall over 150m and survive.
Do not die while Doyle hacks the entry gates.
Complete a level with full health and armor.
Complete Training mission.
Run over 5 enemies while driving a vehicle
Complete the game in Hard or Realistic difficulty.
