ComBAT (itch) (Gustizz)

The goal of ComBAT is to get to the highest stage possible by killing waves of bats. In the process, you can upgrade your weapon and heal.

WASD - To move the character
( You can double jump and even wall jump )
E - To interact with the shopkeeper
Mouse/LeftClick - To aim and shoot the gun

Credit - SoupIsGreat 
Don't forget to post your high scores in the comments!