The idea of using your body to create new platforming opportunity is amazing!
I'd suggest fixing up some of the collisions and attacks, some of them somestimes doesn't feel fair, such as the laser+ gun level, other than that, some polish with great SFX and music would really shape the game better.
Overall very clever idea but still needs some proper fine tuning and polish! As a fellow newbie, great job on finishing your first game! ✨