"Hope you learned something! I tried to condense the video to not make it too long. As such I've ommited a few details. If you are interested in builds and combo inputs, I've covered it in the written guide:
https://steamproxy.net/sharedfiles/filedetails/?id=3134881251

Wanna learn more about Fatty's moveset? Feel free to watch the Moveset guide here:
https://youtu.be/8-ZForxqmqc?si=UjVCQZNchhXmd27F


Chapters
Intro 00:00
Combos 00:28
PHASE 1 02:52
Small Openings 03:00
Triple Fireballs 04:09
Big Bite 05:17
Tail Slam 05:44
Zigzag Flame 05:58
Flame Shower 07:02
Cone 07:12
Tail Sweep 08:52
Bodyslam 09:01
Fire Sweep 09:16
PHASE 2 10:30
Start P2 Head 10:36
Phase 2 Changes 11:12
PHASE 3 11:32
Start Phase 3 11:53
Phase 3 Changes 13:30
Triple Charged Fireball 14:13
Pin Attack 15:09
Side Flame 15:37
360 Flame 16:07
P3 Nova 16:54
SPECIAL OPENINGS 19:21
Roar 19:26
Artillery/Mount Knockdown 21:18
Headbreak Knockdown 21:41
Aerial Knockdowns 23:16
Paralysis 23:30
Dragonator 23:48
Smoke 24:03
Binder 25:08
Mount 26:01
Survival Tips 26:22

Music Credits:
MH4 - 途方に暮れて～ナグリ村～ https://www.youtube.com/watch?v=o9b6I-eNStM
MH4 - 酒楽の宴 https://youtu.be/IaWoPc2rqhM?si=C151p5o29Vi3mEEh
MH4 - 鳴りやまない槌音～ナグリ村～ https://www.youtube.com/watch?v=uVDLndIsjrA&list=PLSYENWh1hKQo7K_H6itYV1TyhKPfZGRhz&index=42
MH3 - Location at the Great Desert Loklak https://www.youtube.com/watch?v=cyTTL3kri4s&list=PLSYENWh1hKQo7K_H6itYV1TyhKPfZGRhz&index=40
Monster Hunter - Scat Cat Fever https://youtu.be/v6bQy1IxHU8?si=t1j9MJDnKa2oLf3h
Monster Hunter Swing - Brachydios Theme https://youtu.be/BFvuF0aEgto?si=VyRmjTzKd9s63F4U
MH4 - 太陽の集落～バルバレ～ https://youtu.be/Tu2CRxzqgZk?si=fbRbEWqpUe9vpHLl
Persona 5 - Wake Up, Get Up, Get Out There Instrumental https://www.youtube.com/watch?v=yzPCRCUfAuQ
MH4U - Bustle of Dundorma https://www.youtube.com/watch?v=twtTUPS3sn8
MHX - Palico Square Theme https://www.youtube.com/watch?v=ty9ebRGHwrc
MHX - Beruan Village Theme https://www.youtube.com/watch?v=K4CfXNEG4GI"