Very impressive work, all around. As far as merging 3D and 2D goes, it's pretty well done... and I'm left without much else to say thus far, other than more applaud for the atmosphere and spooky setting.
Side note: Can I just say 0:33 is why we don't do taco tuesday anymore? I mean look at that, that is at least 3 separate streams of fluid fecal matter flying between those pipes. That, or it's tentacles.
You have me intrigued. I'll keep watching for S&G's.
4/5, 8/10. ~WCCC