People have discussed the possibility of a 100% speedrun. The main obstacle in the way for most runners is Secret 5.

I've proposed an idea to a few people and have had positive responses overall. Would "All Bosses" be a decent category idea?

1. Flandre Scarlet
2. Shine & Bright
3. The Guy
4a. The Four Devas
4b. Next Stage (Influka)
5a. LunarMagic
5b. Cyber
5c. Influka Area
6. Kamilia
1s/2s/3s/4s. - Destination/Crimson/Nue/Gravity Man

I don't know how the run would look, or if it would be fun to play, but it's an idea.

and Koala area

yeah
and on the flip side you could also do All Needle Secrets, like the TAS does