[General]
I recommend you convert all of the perfect curve sliders into identical bezier ones because this is incompatible with older clients. You can use Digital's client to convert those.
This map needs some proper volume balancing. Here's some suggestions that might balance out the volumes below. You can copy+paste them below where it says [TimingPoints] in you .osu file
20470,631.578947368421,4,2,1,30,1,0
111417,-100,4,2,1,20,0,0
113943,-100,4,2,1,15,0,0
116470,-100,4,2,1,10,0,0
118996,-100,4,2,1,5,0,0
[tranquility]
00:39:417 (7,8) - The spacing seems kinda extreme for a map like this. I feel like in order to fix it, the pattern must be changed entirely. I'm thinking of something like this:

(btw, you can change the pattern to be whatever you like if you don't agree with what I have above, but just don't have it to where the spacing is extreme.
00:57:732 (4,5,6,7) - Since you used the ztrot method and copy+pasted existing sections, this pattern might need to be changed as well? Not sure on whether or not it actually needs to be changed because at least from here 00:59:627 (7,8) - the spacing is a little bit less extreme. I'll let you figure out what you want to do with that pattern.
01:46:364 (1) - Either delete the white anchor or nudge it a little since the slider behaves exactly like a linear slider.