pretty sure theres no way to speed that up, so it would also be the first third of any% pretty much
he does that anyway, it would end up being just the first third of any%
After review by members of the verification and moderation team we have reasons to believe the run is spliced/cheated in some capacity.
thats literally just any% but you stop the timer earlier
Read the rules for specifics, but basically there's a method of vaultskip in 00, a glitch called VAG or vertical angle glitch used in 17, and a trick called agsg or angle glitch saveglitch in e01. While none of these are save/load abuse, they are only allowed in unrestricted (determined by a community vote a while ago). If you do none of these things, your run is in the legacy subcategory. I'd recommend joining and using the speedrunning discord server for more questions as speedrun.com forums are a bit weird and it's easier to reach people on discord.
depends on what routes you do, most runs are legacy but 00 17 and e01 have routes purely for unrestricted
Portal Done With No Save Load Abuse in 11:35.835 (Legacy) (world record)