Kill 15 specimens with one Plasma Bomb.
Kill 200 Husks and unlock the ability to use incendiary rounds.
Kill 25000 Specimens and unlock Advanced Gunner rank, and 20 customization points.
Kill 50000 Specimens and unlock Alliance Captain rank, and 30 customization points.
Kill 100000 Specimens and unlock Supreme Commander rank, and 40 customization points.
Kill 500 Specimens with the Sniper Rifle and get 17.5% faster rate of fire.
Kill 2000 Specimens with the Sniper Rifle and get 35% faster rate of fire.
Kill 2000 Specimens with the Rocket Launcher and get nuclear rockets.
Kill 1000 Specimens with Grenades and unlock nuclear grenades.
Use the ammobox 100 times and get additional ammo.
Kill the Patriarch.
Survive a game at suicidal difficulty.
Inflict 10000 damage without dying.
Inflict 40000 damage without dying.
Kill a Crawler Champion.
Kill a Clot Champion.
Kill a Gorefast Champion.
Kill a Stalker Champion.
Kill a Siren Champion.
Kill a Bloat Champion.
Kill a Husk Champion.
Kill a Scrake Champion.
Kill a Fleshpound Champion.
Destroy a turret with the Rocket Launcher.
As a medic heal you teammates in one round with 500 health.
Stun a turret using EMP.
Build atleast 3 turrets in one round.
Complete an objective.
Kill 50 specimens with the melee attack.
Kill a fleshpound with the melee attack.