Nice puzzles and story, but the collision was really bad and some textures warped when you looked in different directions.
Thank you for playing and your donation its much appreciated. I will take a look at the issues your mentioned!
More specifically, the issues with the collision were that you cant slide across the walls very well, you get stuck often. And you get stuck on tiny ledges. Maybe you could simplify down the collision to boxes for the floor and walls and such.