I enjoyed the game, and loved the art and audio. One thing that could be improved on in the general feel of combat, although it's nothing to stress about. The length of the sword makes getting close enough to an enemy to hit them but not close enough to get hit difficult and at times frustrating. It might also be improved by implementing some sort of enemy attack animation, so players avoid an actual attack as opposed to damage on collision. This could be done by get making a squash and stretch animation and vertical translation or adding of force (if you're using Unity's rigidbody system) and having a jump attack of sorts as they move at you. The jumping also didn't feel great, because you have to position yourself very specifically to jump over the heart. You might want to take a look at "Better Jumping in Unity with Four Lines of Code" if you have time. Overall, great job!