The out of bounds idea & route was found by Conzil. The door frame clip was found by Ol' Zed. The 3rd boss skip was found by Shiekrunner. A faster way of defeating the last boss was found by me.

Details on the doorframe clip:

1. Triple jump up the small ledges of the pillar. It's easiest to initiate your first jump backwards.
2. Either keep jumping up or use a backflip like I did to get up on the highest layer, and jump up on the doorframe.
3. Walk back to the edge and use the Vrykul Drinking Horn toy. (If you don't get the Vrykul buff, you didn't walk back far enough).
4. Walk forward until you hit your head.
5. Use Eye Beam.
6. Turn left and use Havoc Metamorphosis on the tip of the triangle.
7. Face the outside you would like to skip to and look up to make the skip more consistent.
8. Double jump forward to clip through.

Items used:

• Wearing: 515 ilvl Mastery pieces, 3x Azerite Armor with the Longstrider trait, 2x Lv70 Mastery crafted Dragonflight gear (with the Blue Silken Lining embelishment), speed enchants, Mastery & Movement speed gems
• Before entering: Fried Bonefish, Charged Phial of Alacrity, 2x Hissing Rune, Pep-In-Your-Step
• During run: Vrykul Drinking Horn, Nitro Boosts, Gunshoes