This run uses the wall jump glitch that was patched out in the "Sneak Thief 1.0 patches" update, so this run is played on the "Sneak Thief 1.0 - Hotfix 3" version, the update before wall jumps got patched. What wall jumps are is pretty self explanatory, if your next to a wall, you can just jump off of it infinitely.

Also, this video was originally recorded on May 11th, 2022. I used steam depot downloading to get on this specific version of the sneak thief 1.0 version