This is a really fun Survivors-like, and implementing the upgrades as glitches is a really cool idea. I like the simplicity of the art style, it helps keep the game really clean and readable. The teleport ability was a lot of fun. I think some kind of background art would've helped a bit, sometimes I didn't realize I was up against a wall, and I think seeing moving objects in the background would help contextualize the movement. Nice work overall!