That ending! Short but sweet shooty game, having two dimensional enemies actually added a dimension to a regular FPS game which is pretty interesting.
Funnily I found your submission when searching for a solution to the mouse drifting bug we both have. In my own research, I think it somehow has to do with the itch.io jam pages themselves, but how and why they're offsetting the mouse is a mystery; it doesn't happen on regular itch.io pages. It also doesn't happen when the game is full screen, if that helps! Let me know if you find a solution!!