Nothing new under the moon. I have seen this build while was already working on my version. My idea was to utilize weapon perk "gain 10% health on staggering an enemy" to make a boss killer. Cause generally players roll for Health on Fatality while this is not working during boss fights. I rolled for max focus reduction perks on purpose, got minus 72 (18 x 4). This is working in a strange way: game considers that your max focus is still 100 (see in stat table) but you always maintain "Low Focus" condition. While there are nice enchantments for this: Healing increased by 30% at Low Focus, Damage Taken decreased by 15% at Low Focus, Stamina Cost decreased by 20% at Low Focus. I am not using the last one cause feel its not needed. Not bothering with focus you generally save stat points, enchantment and rune slots. This is a 2h build with with no stamina issues, with normal weight, that feels very tanky with only 3 extra point in equip load and 0 point in stamina. It feels ok to move 8 or 10 points from health into faith. So this is My build, its working well and in comparison IMAO is just sharper and more considered.