
OSES is a strategic post-apocalyptic shooter in which 3 characters fight by using different guns to survive the zombie hordes in various scenarios and game modes.

Kill 3 zombies with one shot using the sniper rifle

Kill 3 zombies in 3 seconds using the pistol

Kill a zombie from a really short distance using the shotgun.

Apply damage to 5 zombies without releasing the trigger using the laser gun.

Complete all the official map challenges.

Kill a zombie from a long distance using the assault rifle.

Accumulate 20,000 credits in the game.

Buy all of the items from the in-game shop.