Sorry for the delay D:
[General]When changing volume with timing sections, place them 1/4 before the first affected note - if you don't do it, player clicking the note too early will get wrong sound. Fix it in all difficulties and all places, please.
Correct offset for 2nd red section (BPM 95) is 123562.(all except Insane) 02:10:885 (1) - align the end with white tick, or make it longer as in Insane.
[Easy]00:01:610 (1), 00:25:610 (3), 00:35:210 (1), 00:58:010 (1), 01:17:210 (1), 01:26:810 (1), 01:38:810 (5), 01:42:410 (1,2,3,4), 02:01:610 (5) - please, make these sliders nice and curved. Linear sliders do not fit the mood of the song D:
00:28:610 (3,1) - I would delete (3), place spinner at 00:28:610 and make it 1/1 longer.
00:31:310 (1,2) - that is confusing and doesn't fit music that good. Delete these two altogether and place a single note at 00:32:210?
00:34:010 (3) - two times longer and only one repeat, please.
00:37:010 (1) - it's not perfectly horizontal.
00:58:010 (1) - doesn't fit well. Start 1/2 later, make it 1/2 shorter.
01:11:810 (1,2,3) - this might be a little confusing for beginners. Unstack?
01:37:310 (4,5) - make them not overlap.
02:07:510 (1) - I don't really think that the 0.5x section is needed here.
[Normal]01:42:410 - remove the red section.
Linear sliders do not fit the mood of the song. I'm not gonna point all these sliders here out, find them by yourself.
00:10:310 (5,1,2,1) - spacing.
00:17:210 (1,2,3,4,1) - it looks really ugly when playing. Unstack.
00:23:810 (5,6,1,2,3,4) - ^
00:31:010 (1,2,3,4,1,2,3,4,5,1) - why not aligned with center? Also ^
00:42:410 (1,2,3) - I'm sure sure if jumps are a good idea for Normal.
01:01:010 (1,2,3,4) - spacing (that doesn't look intentional, I missed here).
01:20:510 (1) - that slider is weirdly shaped.
01:42:702 (2) - so ugly D:
01:47:202 (2,1) - spacing.
01:52:302 (1,2,3,4) - spacing.
02:07:510 (1) - I don't really think that the 0.5x section is needed here.
Will mod the rest later.