Here is the full list of all 31 Zombie Kill of the Week - there are Reborn achievements.
Go see your friends!
And still going?
Get a shotgun, and make 20 zombies crawl in front of you.
Get 5 meats in a single game from the fridge.
Survive 4 minutes in Area 73. (Challenge mode)
Survive 4 minutes in Arise. (Challenge mode)
Survive 4 minutes in Night At The Mall. (Challenge mode)
Survive 4 minutes in RedSnow. (Challenge mode)
Own atleast 5000$ in one match
Slice 53 zombies in one match.
Survive 4 minutes in Homerun. (Challenge mode)
Find the fridge and make it disappear. Repeat 3 times.
Encounter all 3 tanks, and get them killed.
Get promoted to rank 30.
Slaughter 10 000 zombies in total.
Survive 4 minutes in Abandoned Hospital. (Challenge mode)
You have wasted 5 hours of your life.
Kill 15 zombies with a katana, and 25 with saw in one match.
Stand still for 30 seconds, wondering about your life.
Get the GiGaGirlGannon, and kill 10 zombies within 10 seconds.
Slaughter 5000 zombies in total.
Open all areas in a single match.
Grill 50 zombies with flame in a single match.
Kill the zombie bear before he takes your money.
You have played ZKW for an hour.
Get 100 headshots in one match.
Get yourself killed with a grenade. Dumbass.
Help your friend in need.
Fight your way to round 20.
Get promoted to rank 10.
Zombies are not ment to fly.