As per your request:
[General]
Remove OST from tags
All difficulties should be at the same BPM. 138.015 is technically correct. Just adjust the other difficulties to this, and change the slider velocity to double their current value.
[Easy]
00:14:433 (5) - New combo
Some of the rhythms feel more suited for a Normal tbh. Otherwise, this is fine. I could nazi but I'm lazy~
[Hard]
Set stack leniency to here so that 01:14:645 (2) - doesn't stack so weird
This... is really difficult for a hard. The big jumping is more suited for an Insane. Either tone this difficulty down a bit, or make a difficulty that goes between Easy and Hard in terms of difficulty. As-is, the spread is pretty bad.
I mean, spacing changes like at 01:11:819 (10,1,2,3,4,5) - is just plain cruel for a hard difficulty player. :P
01:27:686 - Map through this break to keep it consistent on all difficulties.
01:37:250 (4,6) - Left one grid, OR 01:36:815 (3,7) - left one grid
[Insane]
HP drain seems really high for how few hits and new combos there are. It's really difficult to regain health. :/
00:07:912 (3) - Remove one repeat
00:09:651 (3) - ^
00:11:390 (6) - ^
00:13:129 (3) - ^
00:41:822 (8) - Left and up one grid
01:36:381 (2,3,4,5,6) - Blargh I can't click that fast. ;_;
Great job on the hitsounding here.I'm mostly worried about the Hard difficulty, really.