I got my own backup!
Not unlocked yetLet the Turret and/or Survivor AI kill 25 zombies
Knockout!
Not unlocked yetKnockdown 50 zombies
Chill out
Not unlocked yetKill 25 zombies with a Fire Extinguisher
FRAGILE
Not unlocked yetDestroy 10 helmets from riot officer zombies
Not medicine
Not unlocked yetKill 5 zombie doctors
Looter
Not unlocked yetKill 10 zombie looters
Cowboy?
Not unlocked yetRide 20 different survivors as a cockroach
One Free Bullet
Not unlocked yetComplete Any Escape map without firing a single bullet, on Hard or Higher Difficulty.
Waste Not, Want Not
Not unlocked yetRecycle 250 weapons
Pay 2 Win
Not unlocked yetBuy 500 weapons from the shop
Gambling Addiction
Not unlocked yetGet something from the mysterybox
Perfecting Perfection
Not unlocked yetGet an upgrade module
Gotta Collect 'Em All
Not unlocked yetFind and collect patient zero
For Whom the Bell Tolls
Not unlocked yetComplete Clock Tower, on Normal or Higher Difficulty in the Flatline Game-mode.
Sleeping Princess
Not unlocked yetKill 20 zombies with silencer equiped firearms
Panic!
Not unlocked yetFind and collect Eugene, Marcus, Jessica and Paul
Need a light?
Not unlocked yetKill 10 zombies with the flamethrower
Green is my colour
Not unlocked yetA handy tool, used for many kinds of purposes
You know, I'm a bit of a scientist myself
Not unlocked yetKill 20 zombies with a crowbar
ADS? What's that?
Not unlocked yetKill a zombie with a Remington 700 that has a scope without using it
No Gasmask, No Problem
Not unlocked yetWhere we are going, we don't need gasmasks
Sweet Revenge
Not unlocked yetSometimes, coming back from the dead is worth it
Boomstick From Hell
Not unlocked yetAtleast it isn't drenched in demon blood
Knee Deep in the Zed
Not unlocked yetKill 50 zombies with the Double Barrel shotgun