This was a pleasant surprise as we played it a few times and got a lot of chuckles from how fast and kinda bonkers it is. My buddy and I have a term we use - spank - for maps like spankster's Spank Me that are far, far more fun than they have any right to be. This is one.
Edited 39 seconds after the original posting.

the broken shader is glass/darkglass and can be found in gumbase (the glass shaders were originally made for Prisoners of War):
lvlworld.com/download/id:604
installing that will fix this map's appearance