The art and atmosphere are good, but it's too difficult. I don't know if you added a secret tutorial, but you're introducing new things too quickly. I made it to hole 4, knowing that the small grey rock can bend your trajectory. However, it didn't bend it enough and I didn't understand what the purple striped area does.
Sorry to hear that! The purple area is an ordinary obstacle, it makes you fail the shot so you have to use the planet's gravity to reach the black hole. It's just a matter of using the right power and direction. The game can be difficult sometimes, but eventually you can beat even the hardest level. Hope you give it another shot :)