__Player 1__ W to move up and S to move down. D to shoot. __Player 2__ Up arrow to move up and down arrow to move down. left arrow to shoot. Bolders (I purposely spelt it like that.) block your shots and so do fallweed (tumbleweed).
My dad, who always wanted to play a game like this when he was a kid. Although I refused to add the blood. added some music and sound effects