[General]Cut/fade mp3 or map the rest. around 50% of the mp3 is unused and that's waaaay too much.
The BG only appears on xBubu's Insane, fix so it appears on every difficulty.
00:45:356 Would be much better place to have a preview point at.
Did you ask for permission for any of the skin elements used in that skin? If not do it!
Please have both icebeam and SadKangaroo in the tags in all difficulites.
[Normal]No Easy

No mayor flaws but nothing too exiting imo
The difficulity could have used more hitsounds though :/
Also shouldn't you use the custom hitsounds?
[IceBeam]Pretty good.
Umm... Change the credits SB to IceBeam.
Raise stacking latency
00:29:325 (1) - I think this would be better if it was a bit faster (0,75x or something)
00:42:150 (1,2,3) - Kinda bugs me that this looks so much like it would be only in 1/1.
Maybe make (1,2) into a slider?
01:44:898 (1,2,3) - This totally doesn't look like 1/2
01:53:142 (1,2,3) - These doesn't feel like they should be 1/2 apart like that.
[Hard]Maybe add some more hitsounds here too
Also shouldn't you use the custom hitsounds?
What's with the sudden jump with spacing in the last chorus?
00:17:188 (2,3,4,5,6,7,8) - Please try to have just one or two different spacings in a combo.. this is just bullshit.
00:56:806 (1,2,1,1,2) - The claps here sounds just awful.
01:55:432 (1,2,1,1,2) - ^
02:10:089 (1,2,1,1,2) - ^
01:19:249 (2,3) - What's with the sudden jump in spacing.
[xBubu's Insane]Raise stacking letency
Why does this have different kiai times?
00:27:951 (6,7,8) - Can you try to avoid to stack these under (5) Looks awful right now.
Okay map.... Kinda sad that I could find so much things even if it has 75+ so I won't star it for now.