On the first couple of playthroughs I did use the magnets to progress through the level however I found that you can jump infinitely so wasn't sure if it was me or the wall jump helping me progress. Also is there a way to attack the boss? I didn't know what the actions that were needed during that part but I did manage to change the colour of the platforms so I think I was going in the right direction.
I liked the character model and animation. Overall I can see the intention with your design alongside the jam theme. Good work.