Badges and combat items are required for Survivor promotion.

3 types of badges, Bronze, Silver and Gold exist. The different types and quantity are given to Survivors for their ranks and promotion status.

Badges may be acquired at a certain chance when exploring the Danger zone. They can also be acquired by rewards for 'annihilating' zombies or by purchasing from the Shop.

Combat items can be acquired during 'annihilation', dropped from the killed zombies or from purchase in the Shop.