Auditory Breaker 100%
Easier than Bloodbath imo (wave ›››› ship, kek)
Oh boy what a ride this has been. Originally started like over 2-3 years ago, but only really started grinding down on the level recently with the 2.2 release and better hardware (new mouse, 165Hz monitor, etc.).
Also the new-ish Geode mod loader is awesome, with the main mods I used being Click Sounds (so I don't have to bother with a microphone) and Click Between Frames (this literally just makes your inputs as precise as they are in real life. There should be no argument against this mod).
As for the gameplay itself, the only issue I have with it is the ball part. Hot garbage (only because it's actually difficult and I suck at ball lmao). All the wave parts are satisfying and consistent, and the cubes at 56% and 81% are a nice breather to prepare your asshole.
Sonic Wave next??
14,457 attempts (including StartPOS copy)
Enjoyment: 9/10, super fun but can be frustrating sometimes
Previous best: 93%, 25-100 x4