This skip was found by me. Details:

1. Jump up on the mushrooms and the branch.
2. Walk back so that you hit your head in the second branch.
3. Turn around, and try to line up the pixel shown in the video. (From experimentation, around 3-4 pixels work.) Use Infernal Strike there.
4. Rotate the camera so you can partially see through the wall.
5. Use Door of Shadows through the opening. (Some spots work, some spots don't, try to spam click to find a spot that does work.)
6. Switch to Havoc.
7. Jump and dash up.
8. Jump down and dash forward through the texture.
9. Walk to the edge of the out of bounds area.
10. Jump/backflip up on a small hill.
11. From the root shown, triple jump up, use Gunshoes, dash forward, and initiate your glide. (This sequence makes sure you have 330+% speed and can reach the end.)
12. Keep just outside of the walkable area during your glide. Dash when available.
13. Turn around past the root to clip back in.

This skips literally everything in the dungeon. The only mob you ever hit is the final boss.

Items used:

• Wearing: Onyx Amulet with Wind Sculpting Stone & Harmonic Music Stone, Scroll of Momentum, speed enchants
• Before entering: Fried Bonefish, Charged Phial of Alacrity
• During run: Oddly-Shaped Horn (temporary mount), Door of Shadows, Quickwick Candlestick, Nitro Boosts, Gunshoes