This was cool. Always nice to see a game with a beginning, middle, and end!
I had a few cases where enemies got stuck or disappeared and I couldn't quite tell why, but overall, I enjoyed the experience, and it was nice to have a game where a pacifist run was the default experience rather than something I'm doing on my own.
I did spot some visible seams from time to time in the tilemap when the camera was moving. This might be sorted by enabling the User GPU Pixel Snap setting in Godot's project settings (under Rendering -> 2D). Relevant documentation can be found here.