Zombie Derby: Pixel Survival
30 Achievements
5,000
PC
Butcher III
Kill 600 zombies
200
98.98%
How to unlock the Butcher III achievement in Zombie Derby: Pixel Survival - Definitive Guide
Title update #1 adds another 5 achievements and 1000 Gamerscore for both PC and Xbox. It should only take 10 minutes to get the full completion if you've played the game previously. I found replaying Level 4 for 120 Zombies kills the easiest method. Anything you killed previously also counts towards the milestones!