Easy00:27:522 (5) - Since you were adding a New Combo after every 2 big white ticks, would be nice to put one here too for consistency reasons.
01:20:665 (4,5) - A bit nazi but (4) is too close from (5). Consider moving one of them a bit.
Normal00:18:950 (3) - Shouldn't this slider start with a Soft sampleset just like the rest? It sounds really inconsistent the way it's now.
00:26:665 (1) - Why the sudden New Combo here? You didn't add a NC here on Easy and Hard, so it's really weird to add one just at Normal. You should keep the next NC and delete this one.
00:48:950 (2,3) - I don't know if it's just me but the transition between these two notes looks a bit awkward for a Normal. But well, probably it's just me, and I don't really know what you should do to fix it...
01:51:522 (4,5) - Wouldn't it be better if you start with the slider and end with the circle? Would help to emphasize the strong beat and would improve the flow in my opinion.
Example.
03:18:308 - Since there's a strong beat here, would be nice to add a circle here as well.
Hard01:43:379 (4) - What do you think about adding a 1/4 slider with a repeat instead of a 1/2 slider? Would fit more the song. Or you can do something like 01:46:808 (2) - just to keep it consistent.
03:18:950 (1,1) - Don't you think this is a bit awkward for Hard players? Some of them cannot stop the stream instantly on the exact moment as Insane/Extra players, so it might get confusing and they will combobreak this. You can move it to somewhere near x256 y344. Would be much better.
03:29:665 (2,3) - Aren't these too close to each other compared to the rest? I'd recommend you to move (2) and (3) a bit far away from each other.
04:22:808 (2,3) - And these two are too far from each other, in my opinion. (3)'s beat isn't strong as (2)'s beat but you did a big jump between them. I'd recommend to stack (3) on (1)'s sliderend.
04:28:808 (5,1) - Put (1) a bit farther from (5) because this section is really intense and a jump there would be nice.
Insane03:18:950 (1) - This slider suddenly slows down here, it's not really good since players would be hyped due to the fast streammy kiai. You can do something like
this. Not sure if it's your style but the chances of sliderbreaking are less with this slider and since you didn't use something like this before, it would clearly indicate a sudden rhythm/flow change.
Snepif's Servant00:55:058 (2,1,2,1) - These don't really fit there, in my opinion. It suddenly slows down, breaking all the flow. Plus, you didn't do the same thing here 01:02:236 (1) - so, it's a bit inconsistent. Anyways, if you wanna keep them, you should silence the sliders' end. It sounds really awkward with the 1/8 now :c
01:58:486 (2,2,1) - Same would apply here.
02:43:808 (1,2,3,4) - Ehh... not sure if this is acceptable, since there's no 1/8 rhythm, I guess... but it's cool.
I'm pretty sure that you're going to need a difficulty above Insane and below Servant difficulty level if you want to rank it. The gap between Insane and the current Extra is just too big compared to the rest.