Really wanted to play this because I relly liked the graphics of this one! It was a neat little plattformer though I don't feel like the puzzles were particulary hard. It was mostly just push the closest box to the closest platform or activate the closest lever or something, so I definitely think you could improve upon that. Other than that I really liked it and think the visuals and audio really nicely convey what to avoid and where to go, so the game is quite easy to understand

Nice game. I especially like your style of graphic, animations and sound. I found one bug. Sometimes when you die and respawn some of the levers and other actions become unresponsive and you cannot finish the level. Here an example so that you can reproduce and fix it:

1. Go to level 2 (Laboratory)
2. Active the first lever
3. Activate the second lever
4. Then jump into a laser, die and respawn
5. Then activate the second lever again
6. Then activate the second lever again -> The third laser will not disappear anymore and you are blocked.

Played this on stream. Check out the vod here for my thoughts. https://www.twitch.tv/videos/1004089613?t=00h41m28s

Fun little platformer - like others mentioned, I encountered a few bugs. 

At the start of level 2, the second switch wouldn't change the direction of the mirror. I restarted the level and it worked fine. 
Also on level two, the box spawner got stuck in a loop of spawning boxes after one of them landed on the button. Couldn't get it to stop without having to stand on it myself, spawning more boxes. 

Good entry though

I’m not using WebMonetization.

I think, I encountered some bugs. Namely, some level became instadead, because I got stuck in a laser. Othertimes, I created a constant stream of boxes, so I couldn’t move past.

With some polish, this might be more fun to play.

An interesting game, I especially enjoyed stumbling on hidden passages with secret nuts.

There were some minor issues: sometimes I would deactivate a button by standing near a box on top of it, and the only way back would be to die. Also, if I died too often, spikes would multiply (instead of one spike coming out of the floor, there'd be a dozen coming one after another).