Brilliant game idea, a must play for puzzle style fans. The background music plays multiple times but i am sure this shouldn´t be a big deal for you.Thank you for participating.

Level design is creative, very enjoyable puzzle game I must say. The one big issue I found is sometimes colliders are bigger than heart itself which caused restart even though I haven't touch the black heart. I think for such shape there should be few colliders combine to match it. Anyway, for first game it is very good job, the most important, it's fun to play. As was mentioned earlier in the comments, consistent graphics design would give much better feeling. I feel from the game that you will be probably good level designer, focus on that skill in future games and keep going!

For a first game, it is pretty good. The puzzle aspect was there, I didn't find any major bugs. The more you create, the better you will be! I think parts you could improve in your game are:

• Art is inconsistent. Sometimes you are using pixel art, sometimes not.
• I was confused the first time, if I should touch or not the black heart. I know, I didn't read the instructions carefully. But in general, it is better if people can understand the concept without explicitly saying it. Spikes, for example, everyone knows that they are harmful.
• Having some simple effects / animations may help to make the game better: screenshakes or scale change with tween of the heart / arrow. Something in the background that has a constant animation can make the environment more alive.