Pathfinder WOTR - Speedrun Unfair% - but the last boss was just too much for me

Pathfinder WOTR - Speedrun Unfair% - good attempt but run not validated.
Under 5h to get to Threshold but I could not beat the last boss so I gave up after 2 hours of trying.
Material to review for the next attempt.
I am giving as much commentary as I can, don't hesitate to enable translated subtitles if you don't undertsand french.
Speerun WOTR Unfair% category has 0 submission on speedrun.com leaderboard. Come and claim the world first !
Game version: 2.7.0
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Speedrun Pathfinder WOTR en difficulté Injuste. Bonne run mais invalide pour speedrun.com parce que je n'ai pas battu le dernier boss du jeu. La video me servira pour preparer le prochain essai.
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Chapters:
00:00 - Character creation
0:04:40 - Unfair% Speedrun
0:14:55 - Shield Maze
0:32:15 - Boss fight, Hossila
0:36:55 - Out of bounds, Gray garrison
0:46:30 - Defender Heart
0:49:05 - Market Square
1:08:40 - Encounter Nenio
1:12:50 - Tower of Estrod
1:21:45 - Black wing library
1:25:51 - Gray Garrison assault
1:50:00 - Boss fight, Minagho
1:58:40 - Hell knights
2:07:40 - Leper's smile
2:16:50 - Lost Chapel
2:27:00 - Drezen
2:39:00 - Boss fight, Blight Maw
2:59:30 - Boss fight, Minagho, Stauton, Nurah
3:12:50 - Wintersun
3:29:05 - Pulura's fall
3:36:35 - Areelu's laboratory
3:41:00 - Ivory Sanctum
3:53:00 - Boss fight, Xanthir Vang
4:07:00 - Midnight Fane
4:31:35 - Boss fight, Darrazand
4:37:20 - Battle Bliss arena
4:55:25 - Boss fight, Vellexia
5:09:25 - Travel to Colyphyr
5:12:50 - Boss fight, Mutasafen
5:21:20 - Boss fight, Baphomet
5:27:00 - Out of bounds, Drezen
5:38:40 - Iz
5:43:05 - Boss fight, Deskari
5:49:30 - Threshold assault
5:56:50 - Lvl 20, enter the world wound
6:08:00 - Last boss - First attempt
6:20:00 - Last boss - Second attempt
6:30:00 - Last boss - Third attempt
6:32:30 - Last boss - Fourth attempt
6:34:35 - Last boss - Fifth attempt
6:45:35 - Last boss - Sixth attempt
6:54:40 - Last boss - Seventh attempt
7:22:20 - Last boss - Time to give up