Very impressed with what you've managed to achieve here in a month. The graphics are amazing, and so is the gameplay - combat feels fluid yet tight. Add in a few more moves and it would be on par with Muramasa: The Demon Blade. The boss did take a few more hits than I'd have liked, but as it is the end of the game I understand why it was made that way. If you're looking for any suggestions, I'd say you could allow the character to have a few extra swings mid air before landing again. Maybe even an air dash. Both could be locked behind power ups if you feel they're too OP.