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