BLADE
Apprentice - Standing Power attacks inflict bleeding damage (based on percent health)
Journeyman - Sideways power attacks hit multiple targets.
Expert -  Backwards power attacks disarm enemies that are power attacking
Master - Forwards power attacks instantly kill enemies below 25% health.

BLUNT
Apprentice - Standing Power attacks disintegrate armor and Expose
Journeyman - Sideways power attacks discombobulate the target, making the stagger more often. A second sideways power attack causes knockback.
Expert -  Backwards power attacks cripple enemies, weakening physical attributes
Master - Forwards power attacks spend all of your remaining fatigue on hit, dealing bonus armor-piercing damage based on the amount spent.

HAND TO HAND
Apprentice - Standing power attacks deal bonus armor-piercing damage to targets with low fatigue.
Journeyman - Sideways power attacks disarm targets with low fatigue.
Expert -  Backwards power attacks knock back enemies with low fatigue.
Master - Forwards power attacks paralyze enemies with low fatigue.

HEAVY ARMOR
Apprentice - Reduce Heavy Armor fatigue penalty by 33%
Journeyman - Gain 35% stagger resistance.
Expert -  Reduce Heavy Armor fatigue penalty by 66%
Master - Chance for attackers to recoil when hitting you.

LIGHT ARMOR
Apprentice - Reduce Light Armor fatigue penalty by 50%
Journeyman - Gain 40% resistance to poison, disease, paralysis, and petrification
Expert -  Remove light armor fatigue penalty.
Master - chance for incoming attacks to miss.

BLOCK
Apprentice - Blocking no longer costs fatigue (unchanged) 
Journeyman - Bashind also damages enemy fatigue
Expert - Bashing an enemy during their power attack knocks them back.
Master - Timed blocks have a chance to dsiarm the attacker.