Holy cow, I love the game design here, it took me a minute to realize I could mine through the tiles but that's such an awesome idea for a dungeon crawler. It was like SteamWorld Dig meets Zelda. So bad ass. And your music was awesome I was bobbing my head. my biggest critique is that I couldn't tell if I was doing damage to the boss. Maybe if it blinked or something when it was hit. Other than that great job! I really hope you expand on this it could make a really cool game.