I just played your game and here is my feedback. I liked the idea and I congratulate you on finishing a game.
Here are the things I think you could improve:
- The camera didn't follow my pace;
- The game was too easy;
- Pressing space should act as clicking "retry" on the death screen;
- Hitting rocks doesn't seem to kill you or do anything;
- Add an effect to the music when too close to the sun in order to create panic and stress;