AT Rey Dau came out in Monster Hunter Wilds so I decided to test out every single weapon against it to see how they would fare, and then ranked them on a tier list, based on how easy I think it is to clear. Each weapon was tested 3-5 times (except for Hunting Horn).
Streams at https://twitch.tv/pikat
0:00 Intro
1:43 Hammer
2:48 Hunting Horn
4:17 Great Sword
5:32 Tempered Wounds
6:25 Gunlance
8:27 Switch Axe
9:32 Lance
11:27 Builds
13:14 Sword And Shield
14:07 Dual Blades
15:29 Bow
16:32 Light Bowgun
17:42 Heavy Bowgun
18:36 Insect Glaive
19:50 Longsword
21:04 Charge Blade
Free Challenge Quest AT Rey Dau - The Shining Storm Rages
The event ends on May 20th and the pendant rewards are distributed a week or so later.