Here is the full list of all 17 Zombie Simulator achievements.
Infect everyone at the Chapter 12
Infect everyone at the Chapter 11
Infect everyone at the Chapter 10
Infect everyone at the Chapter 9
Infect everyone at the Chapter 8
Infect everyone at the Chapter 7
Prevent all vehicles from entering the shelter at the Chapter 6
Destroy the helicopter at the Chapter 6
Escape from the Survivor's Camp at the Chapter 5
Infect everyone at the Chapter 5
Hunt three scientists at the Chapter 4
Infect everyone at the Chapter 3
Release the big zombie at the Chapter 3
Infect everyone at the Chapter 2
Destroy the helicopter at the Chapter 2
Finish Chapter 1
Infect everyone at the Chapter 1