The main goal of the game is for the player to survive over as many waves of enemies as possible using the coins in the game to upgrade health and speed, buy ammo or unlock new weapons. Use houses to loot money and health packs, but also to get a little bit of time to refill your ammo. But be aware, doors can be destroyed by enemies. To buy ammo or unlock new weapons open the menu in the upright corner.
A simple game to entertain yourself while trying to beat your highest score.