From queue.
General impression - map needs a lot of work still, don't see getting BNs attention in current state. It seems sort of fun to play but design is very lacking and there are a lot of rhythm and spacing/pressure issues (especially for a map of this difficulty). You can keep working on it, but I feel like your overall style/methods need more practice and experience, it's up to you but I would just try mapping more songs for a bit and come back to this later.
Metadata: Song comes from BMS, not sure if full version is assigned to Cytus or something but primary source will most likely be that. Not super important atm.
General reocurring issues:Passive hitsounding (
p/3348552 this is worth a read) most of the time you want to hitsound only slider start not a slider end with strong and standing out sounds. Not sure if it's done on purpose or not, but there are instances of you using this bell thing on slider ends like 00:37:658 (1) - or 02:36:222 (1) - which on extra difficulties is on the "meh" side of things.
Somehow related to passive hitsounding - too many sliderends cover sounds that probably should be click on the map of such difficulty. Map is long so probably not gonna mention all of the cases of this, but remember that only the slider start is clickable by the player and you have to think if some sounds aren't too strong and important to be slider ends.
1/2 slider flow and spacing - the way slider work in osu! is VERY lenient, they don't have timing window like hit circles, they require less precise execution in general because of slider balls area being huge (aka slider leniency) + you click/tap less. That's why on extra difficulties you should compensate that fact by using slider patterns that have more of back and forth, rotating etc. flow and are more spaced in general, especially when song raises in intensity. For example
02:34:337 (3,4,5,6,7,8) - this is basically main theme of the song, it's bread and butter, yet the way you force player to play it is rather boring and dull, all they have to do is follow with the cursor around the playfield without any effort and tap sort of to the rhythm. Other thing is that this part could use more circles in general, but if you want to stick with sliders try to force player to jump around the playfield more.
https://osu.ppy.sh/ss/5813313 pattern like this for example (just done better) are way more fitting for all instensive (sic!) purposes.
Kiai time - I think it should cover the main theme more, 02:20:359 (1) - not this section, but it's not really important and easily fixable
1/2 stacks - I think they don't fit a lot of times, you want these for repeating sounds rather than melodies with pitches changing.
Rhythm - way too much is skipped and simplified in my opinion, could easily make the map follow the song better without increasing overall difficulty. I will probably mention those.
Stream shapes - need to work on making nicer curves, mostly design issue but movement on those meh a lot of times as well. Try to use more slider-stream conversion for sets of 5-7 notes rather than whole long streams, copy paste + rotate them later, blanket streams around other objects, avoid enormous arcs like 02:20:673 (1,2,3,4,1,2,3,4) - . Also angle of 1/2 and 1/1 sliders directly after streams doesn't look very good, but it's just visuals (unless it ruins the flow somehow)
http://puu.sh/qwqOx.jpg compared to
http://puu.sh/qwqQc.jpg.
General design - objects don't fit each other making one whole, this is a bit hard to explain but in general you want objects to have similar distances on the playfield between each other, blanket each other or overlap in regular fashion even if they aren't close together on the timeline. For example 01:22:243 (5,6,7,8,1) -
https://osu.ppy.sh/ss/5813540 could be easily improved into something like
https://osu.ppy.sh/ss/5813573 without much effort. It's rather important for the map reception, not necessa rily horrible everywhere but a lot of the map could be done better, I guess you should work on that not just here but improve your overall mapping style and techniques. Also not saying to blanket everything, just keep design in mind and try to make things consistent and neat. + if you use standard curved sliders try to copy paste them and rotate within the pattern, having differently curved sliders creates randomness and clumsy looks
Sorry if this is a bit chaotic, I suck at long paragraphs in English, remember you can ask me in game about the details or if something is unclear.
timestamps timePiano intro: I feel like you should focus on high pitch notes to be slider starts and leave the low ones for the ends usually
00:47:711 (4,5) - should be to sliders into one note, repeat doesn't make much sense
00:48:653 (6) - should be mapped if you switch to a drumbeat
00:51:166 (5) - sliderend to weak, as mentioned
00:52:580 (3) - missing strings?
00:53:679 (3) - sliderend
00:57:763 (1) - ^ I hope you get the idea now
01:03:418 (1,2,3) - pretty sure this is mistimed
01:09:679 (1,2) - would be better co map as 1/2 slider - note -1/2 slider -1/2 slider. as mapped - they are too close anyway
01:11:719 (1) - should be a stream
01:12:662 (2,3,4,5,6,7) - not very fitting, map it similar to previous section to keep it consistent
01:15:489 (5,6,7,1,2,3) - unfitting stacks I talked about
01:19:730 (1,2) - like previously
01:21:615 (7,8,1,2,3,4,5) - stream was awkward direction after "jumps" and the way slider goes seems awkward and ugly
01:22:243 (5,6) - rhythm like suggested 01:09:679 (1,2) -
01:23:343 (1,2,3,4) - spacing way too small for this intensity
01:24:756 (1,2) - very empty could map something here
01:30:097 (3) - could use SV speed up and some different shape
01:37:008 (1,2,3,4) - rotate counter clockwise and reposition so it's smoother
01:38:578 (1,2) - slider vs circles issue again, try to see (or rather hear) why this doesn't really fit
01:39:364 (5) - random, map is hard overall no need for a hold slider here, just make a stream or more 1/4 sliders
01:44:547 (1,2,3,4) - too sharp, try a curve
01:45:175 (6,7) - missing important 1/4s
01:46:431 (1,2,3,4,1,2,3,4,1,2,3,4) - this one is made rather well
01:49:259 (3,4,5,6,7,8,9,10) - arcs in streams like this need more curve, also NC ds change on 01:49:573 (7) -
01:51:144 (1,2,3,4) - vs 02:01:196 (1,2,3,4) - kinda similar thing to map, but it's done in completelty different way, try to avoid that and use similar patterns for similar things in music, don't have to be exactly the same but avoid extremes like this
02:01:196 (1,2,3,4) - this is meh in general
02:16:589 (1,2,3) - some important 1/4s
02:20:044 (3,4) - stream should start here
02:20:359 (1,2,3,4,1,2,3,4,1,2,3,4) - way too spaced, song doesn't justify it here
02:21:615 (2,3,4,5,6,7,8) - awkward, super confined, 1/4slider jumps would fit better
02:24:442 (6) - 1/4s missing
03:01:825 (1,2,3) - 3 should be a 1/4 slider in these triples, or you could map this as a normal stream/jumpstream
03:04:338 (1,2,3,4,1,2,3,4,5) - should use same spacing, directions are super harsh too
03:05:123 (1,2) - 1/1 sliders are supeeer weak here
03:47:060 (2,3,4,5) - map strings in 1/3?
03:58:212 (8,9,1,2,3,4,5,6) - 1/4s
04:15:646 (1) - guitar-ish lick here, sounds to cool to skip
04:19:887 (2,3,4,5,6,1,1,2) - too empty
04:31:825 (1,2,3,1,2,3,1,2,3) - ^
I skipped a lot, took me long time anyway, but I hope you get general idea. I would suggest improving your style and overall mapping techniques doing other songs then coming back to this. Small chance of getting BN interest right now, just being honest here. Good luck!