thanks for taking your time to review our game!
indeed the weapon system is in need of improvement.
The idea of combining attacks is a nice one, some cool things come to mind
I can't comment much about the art style itself since I was doing the planning of the game, but I told them to leave things unpainted to not waste much time on all assets, the result was better than expected and we made painting assets our last priority, our main programmer suggested implementing light and shadow as well. In the end, I think it married well with the style.