The timesave in this run is due to two things:

1. A fairly sizable reroute, which saves something like 30 seconds of walking time by re-ordering the moments
2. Generally higher quality play, i.e. remembering to hold escape at all times.

I did complete several runs on this modded version (see this guide for details) -- and I'm much more proud of them than my Any% time. If someone wants to compete with my Modded Any% I'd be more than willing to return to this game, but the unmodded game is just oppressively long and boring.