Wonder if we should add additional speed runs, for example King run, when you try to get a king the fastest (RNG if you start as king?) or first mega beast killed?

I think King% would be a bit too RNG dependent - just start the game and quit if you dont start as king right?

mega beast killed is good idea but it might be too reset heavy - you can wind up with a world with 0 megabeasts.

It's still entirely possible to set up things like custom worlds. If you could set up correct parameters for creating a custom world with all you need to either be the king or have megabeasts all over the shop, you'd have a more stable way of having things like Hell% and Goblin Siege%. In that sense, King% and MegaBeast% would also be possible.

Though if I could suggest a run, I'd suggest Necromancer%, where, in Adventure Mode, you have to try and raid a tower as quickly as possible and become a Necromancer (can be confirmed by going Skills>Raise Dead).

If you want to try noxiouswolf for a good Necro run go ahead and we can look to add it.