SAS: Zombie Assault 4 achievements

Successfully complete Recovery 100 times

Complete Recovery without ever entering a vehicle

Squish 5,000 zombies while driving a vehicle

Flatten 20 zombies with a single drift

Crush a boss zombie while driving a vehicle

Complete Vaccine with a 4 player team where you extract the vaccine and get all 4 players on the ship in less than 5 minutes

Successfully extract the vaccine 1,000 times

Successfully defend the ship 1,000 times

Successfully escort the whiny VIP 1,000 times

Successfully defeat the pods 1,000 times

Terminate 1,000 Zombie Mechs

Successfully complete Power Out 1,000 times