This game is really good! Mixing a platformer with a revolver that allows you to change various things in the level is very creative and could lead to a lot of fun interactions. On this note, one thing that I really recommend for game jam games is to make it so you can play every level from the start, rather than unlocking them, to give players an opportunity to check out everything you made without necessarily having to beat every single level.
But overall, a very great submission and one of my favorite games from the jam!