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