hercules

Just mash as you see. If you actively use 3-note mashing, it's not that hard. However, if you try to hit the notes accurately, it could be a level 25.

The hold shenanigans right before the late spike are tricky, so you have to hit them on beat. As for the late spike shenanigans, if you're confident in your drills, just go for it; otherwise, use brackets/simultaneous hits. The final sewing machine part is up to you...

You have to step the holds slower than you think.

This could be called the ultimate technical chart. For the twist-heavy runs in the first half, just mash through them with 3-note patterns, and for the hold twist near the end, stay calm and watch the path. For the final section that everyone knows, just look at the pad and imagine pressing the center pad harder, and you'll do fine.