Shmup

You are a cowboy. The cows are killing each other with knives. You need to kill them first, before they kill themselves first. Instruction: Press "SPACE" to shoot. Press "WASD" to move. Boots make you move faster. But, you can only wear one! Milk make you shoot more bullets. But, you are lactose intolerance, and cannot drink more than one. Tricks: Don't rush to kill cows at first phase. Wait…