Good game overall.
First off, I just noticed that the doors in your screenshots DOES NOT look like that in the game. Very misleading.
I like the concept of the game where you place doors around and using them to figure out the puzzle. I didn't know you could use those doors to teleport to each other until I looked at the comments.
I do agree with others in that there could have been a difficulty curve since it felt pretty hard. I'm not sure if the trigger worked for me but I tried pressing 'E' on the that white object on the platform on the top left but I don't think anything happened.
I LOVED the music! I was jamming so hard that I turned it ALLL the way up lol. I do appreciate you taking out the time to create volume settings! Not a lot of people do that and their music can be loud at times
Overall, great game. It can use some work and more visual representation on how things work. Maybe a tutorial!
P.S. You can use the blue door to just teleport to the door which makes it so everything else is unimportant. If that was intentional then cool!