h2b1-10 - lvl 1 speedrun UV
h2b2-38 - lvl 2 speedrun UV
h2b2-200 - lvl 2 UV max
These demos are for the Hell Revealed beta
http://home.sol.no/~chrozo/hr2.htm
OR http://www.doomworld.com/hr2/ (I think this version has no difficulty settings)

Demos require MBF to run