Penultimate Phase 100% (Extreme Demon) by nwolc (Geometry Dash)
What an experience this was. After 91x2, 90, 84x5, 74x4, 68x13, 67x3, and 66x9, I finally beat this level. I did beat this level about 15 minutes after coming back from a long break, so that must have been what I needed. One of the copies that I had was "verified" because of a test noclip run I did of the level. Also, I lost some data which included 11k attempts on the level.
Gameplay: 7/10
Design: 10/10
Enjoyment: 67/100
Current list placement: 117
Personal list placement: ~125
Attempts: 12,102