Congrats to the team for finishing your game!
The whole game felt like genesis/snes era platform. The art, especially the opening cutscene sequence, set an incredible tone for the whole experience, too.
I had a tough time figuring out why I should bother shrinking or growing until the very end as I navigated the upper left region of the map. And I didn't realize I could grow bigger than the starting size until I hit grow by mistake. I was expecting the grow/shrink to be a hold input, so when I held the button and stopped growing, I assume that was it. Would two sizes total have served the gameplay more effectively? I also wished it was more clear what the benefit was for growing and shrinking. I played most of the game as the default size and it just felt tedious. It wasn't until the last block or two that I realized bigger size meant more damage. Maybe having blocks die in one hit, but only if you're the right size? Putting a couple gates like that at the start might help the player better learn their abilities, too.
Gameplay quibbles aside, I enjoyed my time with your game. Y'all created something awesome in such a short time. Keep making games!