I'm surprised this hasn't been discussed before (to my knowledge), but how about a separate category for speedrunning the Adventure Two mode? Having played this game mode a lot back when I was younger (but never beat it), I know that there are a few things that would make this run much more challenging than Adventure mode.

Mirrored tracks - Initially it would be confusing for players/runners who are really used to Adventure mode, but after some practice will not be a big deal.

Better AI - Not really an issue to the best players in the world, but for more casual players this would make it harder to win the races and collect the platinum balloons in order to progress in the mode.

Silver Coin Races - In Adventure Two, the silver coins are placed in harder, more out of the way places than more along the track in Adventure. This would make for some interesting routing for each silver coin challenge race as the game would force you to take certain paths that you would never take in an optimized Time Trial run in order to get all of the silver coins and win the race.

Hopefully I've explained everything well enough and I hope that you'll consider this extra category.

Cheers,

Vaporeon~

This question has been raised a couple of times on my stream, but not officially. It is a very good question, so it is important to discuss it.

This is what I think: Will this category ever have competition even close to the original Adventure 1? I would never see myself grinding this category, and I don't think many of the current runners would either. The category is very similar to the original 100% and since the game already is tough to learn and improve in, it would feel (for me) like a waste of time to learn the tracks mirrored. Adventure 2 is a great addition to the casual play and is definitely a challenge, but for speedrunners this is not really the case. So I think that if we would add it, it would just be something very similar to regular 100%, but slower and with very few of the current speedrunners (except Obiyo) trying to do serious attempts.

These are just my thoughts of the matter, and I would just be happy to be wrong. If there is a great interest in this category existing, then it should exist.