I tried it twice and couldn't beat either boss, the first one it said to bounce on him while he was distracted but i didn't know how to make him distracted and he just took no damage. The second one it said to bounce off of walls to get on top of him, but no matter how i tried i couldn't bounce high enough to get above him.
I like the concept of a stomper focused on boss fights, art was cool, sound was nice and arcady, and what I really liked (and may steal for myself in the future) was how you implemented instructions into your game. You had clear directions and movement controls visible in the main menu before starting the game, and had individual explanations of bosses (mechanics) before each fight. Only wish it was easier / more straight forward to actually execute on the instructions, overall good job on the game!