It’s not an usual incremental game. You’ll have to destroy a coinbox, an unanimate object. It can be done with a tactical nuke only. But in order to buy a nuke, you’ll have to earn some money first. You earn money by dealing damage to the box. You can use many melee or ranged weapons. Money can be used to buy upgrades, which will give you even more deadly weapons. Very fun game. I highly recommend it.