Hi! Thanks so much for playing and I wholeheartedly agree on all your points.
The freezing is completely my fault due to having loads of transparency calculating right at the start (oops). The shaking is a little much, sorry for the motion sickness! Oh and the walls, yes! I'm currently updating all the meshes and textures to get some nice chonky walls which should hopefully bit alot nicer.
I'm so pleased you touched it :D, I didn't know if people would want to, and would actually see the animation.
Thank you for your time and all of your really helpful feedback. I'm going to fix all of those points.