SAS: Zombie Assault 2 Insane Asylum

SAS: Zombie Assault 2 Insane Asylum is an expansion to SAS: Zombie Assault 2, and the third overall game in the SAS Series.

Ranks
Private - The starting rank.

Corporal - Red dot sight

Sergeant - Radar Scanner

Lieutenant - Faster reload

Captain - Badassness

Major - High capacity magazines

Colonel - Sentry gun engineer

General - Witness the fitness