My first prediction was that getting close to sub 20 on this category was definitively possible. And getting a sub 20 was maybe possible. I wasn't expecting to get it so quickly ^^' And this run is still improvable. I really want to see how far this category can go. Sub 19 might even be possible. But I'll need amazing RNG ^^' Btw, unlike New Game, the main RNG part is not happening during the boss fights (because you can kill all of them very quickly), but it's happening on the main map. The location where you'll spawn, and the location where you'll need to go, will affect the speedrun even more than on New Game. This also means you'll need to be really good at driving and finding the best path to get to the next building.
(The run was retimed with Avidemux, and it's barely a 19:44)
Twitch VOD: