Using a switch to open one door and close other was not something I thought about, it's a really good idea and if I work more on this game I will try to implement it.
And yeah the puzzles are very easy, they were supposed to be more like a tutorial for the different things you can encounter and they were supposed to start getting harder after the 6, but I didn't have time to make them for the Jam. I think I will try to update the game after the game jam ends and finish some of the things I still want to add.
Thank you for playing and for giving your feedback!