Game is satisfying, music is nice. I like this entry but I have some feedback:
Constructive Criticism: I only played till level 3. This doesn't feel like a roguelike so setting the player back to the 1st level is tedious/discouraging. Making the level timed also throws speedrun potential out the window. Asteroids being a 1 hit kill is also discouraging.
Constructive Feedback: I would make the leveling based on the amount of asteroids/enemies you destroy, which encourages the player to be aggressive. I'd take off half the player's health on asteroid hit instead of instant death. Also more dense levels at first.
Hope this helps (: