This is a fun idea, and being able to launch yourself around with the gun is super fun. However, the really high sensitivity and lack of a reticle make it hard to aim, and as there isn't any explanation as to how enemies are killed, it feels like the first two "missions" were completed mostly by accident as I figured out what was happening with the gun. With some better aiming, as well as a clearer purpose of the gun from the start, this could easily be a speedrun-worthy game. Good job :)