I just finished Alice, I own the disk but never finished the game, but the download worked fine.
Also I don't see it possible to make levels in Unreal that could ever work like they made Alice. They did some really good stuff in those maps and all I could think of Unreal would be flickering movers all over the place.
And now I got Heretic 2 up and running, you have to get the enhanced update, then after I installed the regular game, in the enhanced files all I did was install a file for 3DFX wrapper, and maybe the quake2.DLL. But it is now working fine.
Binary Space Partitioning