Buy any special ability in the store.
Buy 5 any weapons in the store.
Complete 8 battles on HELL difficulty.
Complete 8 levels with 3 stars.
Resurrect.
Destroy 1200 crystals blocking the way.
Don't use medkits for 15 levels in a row.
Collect all samples of matter hidden in the levels.
Fully upgrade any turret.
Fully upgrade any weapon.
Get three stars for all the levels in the main campaign.
Complete all levels on HELL difficulty.
Complete all levels on HARD difficulty.
Complete the game.
Complete the game with Mechanic.
Complete the game with Warrior.
Complete all levels in cooperative mode.
Kill 5000 any enemies.
Kill 10000 any enemies.
Kill 20000 any enemies.
Kill 2000 enemies with auto rifle.
Kill 4000 enemies with auto rifle.
Kill 2000 enemies with a grenade launcher.
Kill 4000 enemies with a grenade launcher.
Kill 2000 enemies with a shotgun.
Kill 4000 enemies with a shotgun.
Kill 2000 enemies with a sniper rifle.
Kill 4000 enemies with a sniper rifle.
Kill 4000 enemies with turrets.
Play the game for 30 minutes in battles.
Play the game for 15 minutes in cooperative mode.
Kill 400 by setting them against the others.
Kill 900 by setting them against the others.
kill 15 enemies in 1 seconds with any gun.
Don't use turrets while 10 battles.
Set up any 3rd level turret during battle.
Use any special ability 100 times.
Complete the game as Medic.
Kill 2000 enemies with Electric rifles.
Kill 4000 enemies with Electric rifles.
Complete the N'Aliens campaign.
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