We have a rather similar concept for the main game mechanics, making parts of the environment interact with your powers, so the first impression is quite positive 😜. I even started to prototype with very very similar sprites to yours!
I like that you based your game aroud the alchemy gun, and I think that you have managed to explain the core mechanichs in just a few minutes that it takes to complete. It may be only me, but I felt that the game was too easy. However, I really liked the creativity of some of the puzzles and sections!