Great art style, and I really enjoyed the boss duel like a real wild west outlaw :) I did notice a slight menu bug I wanted to mention. When switching to Fullscreen in the Options menu, it tells you to press ESC to exit. But pressing ESC just drops the game back into windowed mode, and you have to press it a second time to actually return to the main menu. Just a small heads-up on the UI, but otherwise, awesome job on the game!