Yo \o/ (the m4m thingy)
[Corrosion]
00:41:060 (1,2,3,4,5,6,1) - This pattern just feels off and weird in comparison with the rest of the map
00:44:242 (3,4) - Spacing between these is confusing, since they have the same spacing as 00:42:879 (1,2) - even though 00:44:242 (3,4) - is way closer in to eachother in the timeline
00:45:606 (5,6,7,8,9,10) - Not really a fan of this pattern, it seems kinda ugly and doesn't really flow at all
01:13:787 (1,2) - Shape of these is bleehhh
01:17:424 (1) - This shape fits here because of the vocals but then 01:19:243 (1) - just feels out of place, but then again you need it to be the same for symmetry and EHHYUINI IDKANYMORE lol
01:49:242 (3,4) - I would change the positioning of these so they fit/look/flow better towards 01:48:333 (1,2) -
02:17:424 (1,2,3,1,2,3,1,2,3,1,2,3,1,2,3,1,2,3,1,2,3,1,2,3,1) - o.o
02:44:546 (5,1,2) - This looks and plays kinda ehh
03:16:515 (3,4) - Look, here it just feels/looks/flows way better than the other one
04:03:333 (3) - Dat slider ass could be nerfed :^)
04:05:151 (4,7,3) - Shapes can look way better than this, cmon
04:10:605 (3) - ^
04:17:424 (1) - The big ass stream that starts here feels a little too overdone/long/over the top, you could add some more variation to the whole thing listening to the music, atm it just looks too cheap compared to the rest of the map imo
04:44:696 (1,2,3,4,5,6,1,2,3,4,5,6) - Should be different than 04:45:605 (1,2,3,4,5,6,1,2,3,4,5,6) - for sure
05:03:333 (2,3,4,5,6,7,8,9,10) - The way you have to change direction from 05:01:060 (1,2,3,4,5,6,1) - feels a bit meh, you can make the flow WAY better
05:08:333 (1,2) - Shape pls
Overall it seems like a cool map, I really love the theme, it also plays very cool to such an epic song.
Good luck!