Great stuff! The movement felt smooth and the mechanics are self-explanatory (also nice tutorial! Learn by doing).
Personally, I'm not a fan of 'softlocking' a level, even though there is a reset button it sometimes made me feel there is just a few set-in-stone steps I need to take. Which in essence is true of course... it just feels more like cracking a code (moon-logic in point-and-clicks) than solving a puzzle. Being able to trigger magnet gates without a magnet, or have a path around it, would probably help negate this feeling.
A small bug I found is that in the HUB world, the level reset sprite grows infinitely when holding Ctrl. Easy to fix with e.g. a Mathf.Clamp() on the Sprite transform.localScale, or block the action when in the HUB world.
Looking forward to play more of this!