This game is really amazing and the boss is truly creative and stressing! I have yet to encouter any bug, but i have 2 suggestions: How about a mobile port (for example like google handled minesweeper with double tap to open and one tap to show options to put the flag) and (if they aren't in the game yet or i haven't found them) more boss fights with your Music from YouTube (10 and 11)
Also i had to donate to support such an amazing composer