All the ladies of the world have been consumed by a ravenous hunger. As the last man on earth it's your duty to slay as many as you can.
The more you slay, the more Hentai you unlock... so go forth and slay them all!
Wield a variety of weapons including!
Heavy Machine Gun
AK-47
Revolver
Alien Ray Gun
Pump-Action Shotgun
5-7
PPSh-41