I was able to beat all of the levels. Pretty nicely constructed puzzle game.
One point of feedback I’d have is it would be nice if it was easier to tell which pipes were one-way. I couldn’t visually tell the difference between two-way or one-way pipes so I had to experiment.
I also didn’t realize I had to press E to toggle switches at first so I briefly thought I had softlocked myself somehow until I started spamming random buttons hoping to get the toggle to work.
Overall, fun little game and well put together progression/tutorial.