Improved Unarmed Strike
You are considered to be armed even when unarmed—you do not provoke attacks of opportunity when you attack foes while unarmed. Your unarmed strikes can deal lethal or nonlethal damage, at your choice.
Boar Style
You can deal bludgeoning damage or slashing damage with your unarmed strikes—changing damage type is a free action. While using this style, once per round when you hit a single foe with two or more unarmed strikes, you can tear flesh. When you do, you deal 2d6 bleed damage with the attack.
Two Weapon Fighting
Your penalties on attack rolls for fighting with two weapons are reduced. The penalty for your primary hand lessens by 2 and the one for your off hand lessens by 6.
Harsh Training
At 2nd level, an unarmed fighter gains a +1 bonus on saving throws against effects that cause the exhausted, fatigued, or staggered conditions or temporary penalties to ability scores. This bonus increases by +1 for every four levels after 2nd (to a maximum of +5 at 18th level). This ability replaces bravery.
Improved Grapple
You do not provoke an attack of opportunity when performing a grapple combat maneuver. In addition, you receive a +2 bonus on checks made to grapple a foe. You also receive a +2 bonus to your Combat Maneuver Defense whenever an opponent tries to grapple you.