Amazing! Can't stop playing! The boss fight is very challenging and I enjoyed it a lot. However, I found that being aggressive can be more effective than playing safe. I tried to play smart and safe many times, but there was just no safe place for me! And after I tried to play aggressively, it became much easier and I can beat the boss very quickly. So my suggestion is to make the game more tactical. For example, making the dungeon bigger and that means more space for players to survive. Or adding obstacles that can both help and impede players. But that's all my personal thought. Because most of the time I love playing safe when facing the boss. I always took so long to beat them and I enjoyed the time. But anyway, it's an impressive game!