I'm loving the concept of this!
The level design could do a little better especially in types like lv3 where it's has a section where you are required to do precision platforming and it kind of change too much of the gameplay for me a little, and the mode change could be executed faster. It has a nice zoom out and animation to show what's going on but it gets a bit tedious to watch after a bit.
A small QoL of having undo/rewind button also would be nice than having to restart the entire level since I accidentally fell down when jumping on a tetris block right by the door and had to start over haha
The art and sounds is very nice, and I can see this idea getting expanded more. Great job!