brain broke by 3.5, somehow brute forced it by repeating the same route like 10 times before actually moving stuff and I guess that meant I had enough down trips saved to push both blocks through
Yeah, 3.5 is breaking my brain too. I've been trying to solve it for a couple of evenings now, and I don't see any way to do it. My guess was similar to your brute-force, that I need to do some particular path ahead of moving everything, but even then I don't see what that path must be. I'm rather impressed with these puzzles.
Yeah, my problem was trying to get both gold statues under the silver sigil. Finally realized how to get them to cross paths so that my undos didn't keep putting a silver in my way, and then, as you said it was mostly a matter of filling up the undo buffer with enough moves to get around. Finally solved (and, I think, optimized) it.