A great idea for a simple yet addictive gameplay! Personally, I'm not the most skilled player of these types of games, and I miss the ability to acquire passive upgrades through game progress (for example, increasing star durability or temporarily reducing asteroid speed at certain points). It's clear that this isn't the point of the game, but knowing that it's possible to beat it with time and a significant number of acquired upgrades, I'd like to give it more of a chance.