thanks for even more feedback about my game :D
im planning to add a big boss room in the future, thats one of the rooms with a coloured square at the moment, im just planning on leaving that until the rest of the gameplay is really solid.
more weapon types are also (hopefully) coming, as well as a story potentailly, although i dont have much for that yet lol.
Ive actually just published a new version of the game, theres not much different, pretty much just a minimap and coins dropping, but thats something at least :D