Hey, thank you for the hint, I watched the video now. :)
Don't get me wrong, it hasn't been a bad experience, it was just, that I didn't know what to do in level 3 (which is, from what I could gather from the video, actually the hardest level?).
I think too many mechanics have been introduced at once there, without proper explanation to the player, maybe? Because the level was so big, that you couldn't see all of it at once, it was also hard to figure them out.
I don't know, maybe a slower pace, where you introduce every new mechanic one by one in a smaller test scenario, might help?