Is there any existing tutorials on how to do it? If not, could someone give me a runthrough of it? Thanks!

I think Sphinx clip isn't possible on 1.2

Clips are possible in 1.2 So you Kind of Can do it It just needs a set up

sphinx clip is impossible on 1.2 to current knowledge

Which clips are possible in the newest version?

Afaik all Water Surface Clips, Inverted Pyramid Clip, Sand Pipe Clip, Sewer Clip, Snow Upstairs RCC, Snow Downstairs RCC, all Moon Clips, Lake Corner Clip, and a few more

The only other useful one is the lake outfit room skip clip