Here's my review (I didn't bother thinking about authors during my first playthrough so these are relatively unbiased):
Ant IDM - Can't play this song very well, surprisingly difficult so gonna ease up on the judgment. Overall I thought it was a good file.
Bat Country - Well done, pretty fun. Not much to say (o:
bubsy the bobcat - The 64th wall seemed really out of place in difficulty with the rest of the song, but otherwise decent. Sync felt a tad off to me?
Crystal Sample - File is good. I thought the mine usage was a little... I don't want to say 'inconsistent', but it felt good in some places and eh in others.
Heart Beat Rock - I dunno how I feel about this. It's stepped fine but overall pretty lackluster chart. Also I have an quirk with the jumpjack at the end of each drum loop, cause it definitely sounds faster than 16ths to me.
The Limbo - pretty KOOL. I didn't spot anything too out of place. Nice buildup and chart fits the song well imo
Manima ni - I love this song btw. Chart was good. Mines pretty excessive at the beginning xd but their use in the song was good for the most part. Rather freeze heavy and I didn't think some of it was really necessary.
The Nth Degree - Dat Stephen Kay. This was a really cool and well done file imo. Background is gross, sorry. ):
Pink Nightmares - File's tight. I enjoyed most of it, although I felt some flow issues with the chill sections. I think a cut of the song would have been more appropriate.
Suffocating Sight - Not bad. Again, I can't really play this song very well so I'll reserve any real judgements. Patterns seem kinda quirky I think, should have been more playtested imo
The New Sound - Ugh. Just straight up 16ths the whole way through isn't really much fun I would think. Patterns at the end are especially annoying. I think this was purposefully stepped to mask the simfile creator's style.
Witch of the bottomless swamp - Groovy and enjoyable. File is varied, but still felt a tad dragged on and I would have preferred to see a cut.
Witch Tower - Really solid file, very fun. Not much else to be said here for me.
Guesses: