I've had a blast with it, especially after picking up many upgrades. I felt like an indestructible worm that was able to destroy worlds!
I think the game has a great take on the theme. The clarity is good, and the game is easy to understand.
My only piece of feedback would be about picking up upgrades. I felt like the optimal strategy was to do two runs to collect all the upgrades and then finish the game. For me, it would be more interesting if the game had a roguelike-inspired structure, where you can pick up more upgrades the further you go. That could give you the feeling of gradually getting stronger and improving over time.
Personally, I would probably tie movement more closely to picking up upgrades. That would encourage more movement, which I feel could be beneficial for the gameplay.
Great job! I really had a lot of fun with it!