This is some VFX I made using footage from Garry's mod in Blender 2.92. The original footage was motion tracked, and the fluid (FLIP Fluids) was added on top. I had to object track the view model to create a mask that occludes the water in front of it. All of the water sounds were added in by hand using DaVinci Resolve. This took about 30 hours to make, and 9 hours to bake/render.

Raw Footage: https://youtu.be/cTxj4CvSVPU