For Matthew (from Facebook thread):
***

Personal Combat Style: Crow's Claw
Prerequisites: Strength 15 or higher
Maneuver and Technique DC: 8 + your Strength modifier + your proficiency bonus.
Weapons: The Crows' Claw style uses two War Picks.

Journeyman
Unbalancing Attack (Maneuver): pg.245

Deadly Strike (Technique): pg.244

Balanced Hands (Technique): pg.246

Master
Precision Strike (Maneuver): pg.244

Blood for Steel (Technique): pg.243

***
At Str16, Fury4 (Spirit of Savagery) you would get:

AC: 10+Dex+Con (Foes have Advantage)
Attack Action: +3 (Advantage), 1d8+Str+2+4
Bonus Action: +5 (Advantage), 1d8+Str+2

For the lost opportunity costs by going Spirit of Savagery, you could actually do better without trying to TWF.