Fun submission. I could see play this as a fun way to kill time. Maybe even as a mobile app? I like these games where you have to control two players are once, I think they are challenging but fun. I also love pixel art. It is very nice. The music was also nice.
My feedback is just things to polish notes. Firstly, once your platform breaks I would like it if you just got a game over screen instead of the guys having to fall. It would be fine other than sometimes you land on small floating platforms when you lose yours which I think conveys the wrong idea. Also, the first time I played I think the platform was breaking in one hit. But I just played again and the health bar worked. Might have just been a bug but I am still a little confused about the health system.
Anyway, fun little submission, and I wish you luck in future game development!