This had such flash game vibes, I really loved it! The simplicity of the mechanics made it really addictive, I couldn't stop until I had maxed out all the stats - and the ending was sick! A really creative and great use of the theme as well [:
As for critique, I thought the text was a bit hard to read as it overlapped at some parts, but not a huge issue. I thought the music was really chill, and while the sound for spinning was satisfying at first, it got a little bit sharp for the ears after so much repetition. Finally, it could have been nice with some kinda indication or instruction for when to press to get a perfect dive, especially since it was a bit hard to see where the water started.
But overall, I had such a blast playing through this and getting all the upgrades, great job!!