Shift's Over
Not unlocked yetSurvive all the waves on Mine.
Bridge Troll
Not unlocked yetSurvive all the waves on Bridge.
Safe at Last
Not unlocked yetSurvive all the waves on Arc.
Flawless
Not unlocked yetFinish a level on Normal or higher difficulty with 100% Core Life remaining.
Perfectionist
Not unlocked yetFinish a level on Insane difficulty with 100% Core Life remaining.
Close Call
Not unlocked yetFinish a level with less than 5% Core Life remaining.
Good Day, Mr. Walker
Not unlocked yetKill 2000 Walkers.
Mach 5
Not unlocked yetKill 4000 Runners.
Rymndhaest
Not unlocked yetKill 1000 Hoverers.
Shoot 'em in the head!
Not unlocked yetKill 250 Bobble Heads.
The Bigger they are...
Not unlocked yetKill 250 Big Walkers.
Turbo Aim
Not unlocked yetKill 300 Gliders.
Flyswatter
Not unlocked yetKill 1500 Dodgers.
Pollen Allergy
Not unlocked yetKill 2000 Spore Pods.
Big Guys Require Big Guns
Not unlocked yetKill 1500 Tanks.
Lockdown!
Not unlocked yetKill 250 Blockers.
Too Fast
Not unlocked yetKill 1000 Chargers.
Time to Expand
Not unlocked yetKill 100 Soakers.
All is Dust
Not unlocked yetGib 1337 enemies.
All Pro
Not unlocked yetKill 2000 enemies with the Sniper Rifle.
Terminated
Not unlocked yetKill 3000 enemies with the Assault Gun.
Airborne Assault
Not unlocked yetKill 1000 enemies while you're in mid air.
Giant Enemy Crab
Not unlocked yetGet 5000 weak spot hits.
Collateral Damage
Not unlocked yetKill 15 Runners with one Assault Grenade.