For anyone looking into help with the Brutal Mazes i did it with character level 87, on Infernum difficulty (I've cleared all mazes on Nightmare difficulty actually but the last one, for the last maze i needed to go into hardest difficulty so i can upgrade the weapons to Pristine level). After that the last maze felt like a walk in the park.

Here's the final stats info:

Level: 87
HP: 7586
Focus: Start 120, Max: 905, Regen per turn: 82

Crit chance: 39.33%
Crit Bonus: 285,0%
Blunt damage bonus: 521,4%
Weapon damage bonus: 217,2%

Armor: 1953
Dodge: 57,2%
Shield block: 45,03%
Resistance: 89% all of them but Poison and Bleed, who were 86 and 84%

All items were Pristine upgraded to level 10. I've spent more than 1.000 bloodstones for that.

Cape : God of Brutal Silver
Amulet : Mystic Pendant
Gloves : Wind-Forged Gauntlets
Armor : Visage of Burdens
Weapon : Volcanic Smasher
Shield : Magnetic Shield
Boots : Footguards of Fortune
Legs : Platelegs of Dawn
Rings : Great Ring of Fury and Great Sapphire Ring

Bloodlines (final respec):

Anger:

Hard Hitter 3/3
Precise Hitter 20/20
Hard Precise Hitter 30/30
Stunning Strike 10/10
Blunt Expert 30/30
Harder Hitter 10/10
Berserker 20/20

Vitality:

Lesser Health 3/3
Minor Health 25/25
Major Health 25/25
Greater Health 20/30
Improved Focus 15/25
Improved Focus Regen 20/20
Focused Mind 20/20
Vampiric Touch 5/10

Deceit:

Dodge 3/3
Refreshing Dodge 10/20
Greater Dodge 30/30
Dodging Death 10/10
Shield Mastery 15/15
Ranged Defender 20/20

The fastest way to go through difficulties is with greatsword/axe slashing crit build, at least through 4-5 difficulties. For the last difficulty and brutal mazes you need a shield, you could go either slashing, piercing or blunt as main weapon. I've mainly went blunt because of the stun option - saved me many times.

Useful site if you need additional info: https://vampiresfallorigins.fandom.com/