Melee Combat

Tier 1:

 * Power Strike - Adds damage to your next melee attack
 * Tendon Slash - Slows target

Tier 2:

 * Skull Crack - Reduces targets strength and accuracy
 * Rive - Target bleeds for damage every second
 * Shield Bash - Adds damage to your next melee attack and apples Sundered Armor debuff

Tier 3:

 * Bloodlust - Increases damage but decreases damage reduction
 * Guard - Increases damage reduction
 * Whirlwind - Deals damage to all targets around you

Tier 4:

 * Adrenaline Rush - Increases movement speed