I wasn't expecting to spend so much time on this! Gameplay wise, I thought that the paddle was way too slow, even at max upgrade. I also first restrained from upgrading the dash speed because it was making the game more difficult. The gameplay loop is nice, but it can be quite frustrating.
Once I finally upgraded the dash though, I discovered the "keeping momentum" power-ups, and at that point the game completely changed! It was all about optimizing the gain of coins, and significantly getting more powerful at each run.
But most importantly, I wasn't expecting so many secrets! That's what kept me really hooked. I love how it is implemented in the game design, and how they are satisfying to find. I was able to discover two more towers (and some hidden power-up), and both were really cool discoveries. The upgrades they provide also complement the game really well, and make it extremely satisfying to re-visit the first tower. For some I'm almost sad that they appeared so late in the game, when I was already basically invincible.
This experience reminded me of the ones I had with rogue-likes like Binding of Isaac, Inscryption or Noita. Seeming simple at first but actually full of secrets. It was a very great journey!
Small note about the web version: I wish the game was playable full-screen. Sometime my cursor would go outside of the frame and lose focus on the game.