Overall, I think the game is good. I can't think of any problems besides the ones you mentioned in your video.
The one suggestion I have as far as iterating on the idea is that you make the magnet a permanent part of the character's equipment. You could take the magnet with you between levels and, prior to introducing the recall mechanic, you could use a level element to give the player back the magnet at the end of the level. That and making the robot visually match the magnet would help show that the magnet is the key element of the game.