I couldn't find any problems other then a few nitpicks. The biggest thing I found is that I think the hit sounding is a bit quiet. For example here 00:42:461 (1,2,3,4,5,1,2,3,4,5,6,7,8,1,2,3,4,1,2,3,4,5,6,1,2,3,4,5,1,2,3,4,1,2,3,4,5,1,2) - it's a bit hard to hear it even though I'm using a relatively loud skin. I think you could boost the volume of the map by 10-20% and it should be fine.
I only have 1 other thing and that's that in some cases it's hard to hear the "normal-hitnormal2" hit sound. For example here: 00:56:180 (4,5,6) - 01:07:979 (4,5,6,7) - I can't really hear the first note when I enable custom hit sounds. If I listen to it a few times I start to hear it but I don't think it should take anytime to start to hear a hit sound. I tried increasing the volume to 95% and it helped a bit but not enough in my opinion.