i like the concept! tho it feels like it needs more time in the oven. shooting felt good, and the asteroid enemy was well done, once i saw there was health pickups my gameplay style changed completely, and it became much easier to complete this.
The particles around the sun are a bit visually noisy, making it hard to tell exactly where it is, and the hit detection on the pickups is a bit low. I would be excited to see this concept expanded c: