Realistic Street Fight Apocalypse

The earth has been contaminated and therefore everyone is trying to get a protective mask. You have to fight for survival by destroying enemies and chests to find weapons. You can also buy the mask in the shop, but first you have to earn enough money by fighting enemies. You have to upgrade your character to face the decisive fight against the big boss. Will you survive the apocalypse and survive in this contaminated world? Everything now depends on your skills and will to survive. Fight in real battles and claim victory.