General

1. You should change the dark blue combo color to something brighter. The way it is right now blends in with the dark background a bit too much, making it more difficult to read.
   
   Example

   
2. Almost half of the map is in kiai (it doesn't have an end point either). You could end it at either 01:37:646 - or even better 01:23:987 -
   
3. Why is the offset negative? Consider setting it to the first downbeat (big white tick) at 00:00:085 - (85ms)

endless dead end

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  I noticed a lot of this difficulty just uses the same spacing between all notes which play more like slow spaced streams rather than single notes (or fast singletapping for some people). This way you don't really emphasize the stronger beats in the song and can be generally less fun to play. I'll post some suggestions below.

1. 00:02:890 (5,6,7,8) - This pattern could be changed to look better. You could try imitating the pattern you used here 00:00:938 (4,5,6,7) - since it follows the same melody.
2. 00:06:426 (3,4,5,6) - The 4 and 5 being stacked while following the 1/4 rhythm force the player to suddenly stop before suddenly snapping again to 6 in a straight line, even though the melody at this point is constant. I suggest you move the stack on top of 6 and decrease the spacing between 3 & 6.
3. 00:10:694 (4,5,6,7,8,9) - This is one case where you kept equal spacing that could be improved. There's a stronger kick on 5 and a snare on 9 so you could make the jumps between 4->5 and 8->9 bigger and keep the rest smaller.
   
   Example

   
4. 00:12:646 (4,5,6,7,8,9) - Same thing here and 00:18:499 (4,5,6,7,8,9) - here (and more, you get the point now)
5. 00:15:694 (1,2,3,4,1) - You could decrease the spacing a bit. The song doesn't change at all compared to 00:13:743 (1,2,1,1,2,1) -
6. 00:20:085 (1) - I really suggest you shorten this slider. There's a strong beat at the slidertail so there should really be a clickable note there (especially considering it's followed by another series of singletaps).
   
   What I'd do

   
   Basically shorten the slider by 1/4 and place a hitcircle on the downbeat
7. 00:20:085 (1,2,3,4,5,6,7,8) - You could do the emphasis thing again. There's a stronger beat on the slidertail (or hitcircle if you applied the suggestion above) and on 5 (6 if you added hitcircle). Basically split 2-5 into one part and 6-9 into another.
   
   Example

   
8. 00:49:597 (2,3,4,5,6) - Very subjective but this feels overmapped. There's almost no sound there so a kickslider buildup like that really feels out of place.
9. 00:59:414 (6,7,8,9) - Placing these on 1/8 is a bit too much, it should be fine with a single note between the sliders on the blue tick. If you really want to keep it as a 1/8 stream, add a NC on 6 so the change from 1/4 to 1/8 is more apparent
10. 01:15:024 (4,5,6,7) - Same here. Either change to 1/4 or add NC on 4
11. 01:00:573 (1,2,3,4,5) - This pattern feels really weird even for singletapping.
12. 01:31:792 (1,1,1) - The 3 spinners look really out of place since you could still map the stronger beats in the background. If nothing else, you could increase the gap between the spinner end and the next spinner start to half a beat.
    
    Like this