Some people get the taste for blood and allow it to feed their hate. This is not always a total loss of control, but more of a focused control of anger. A bloodluster uses his hate to give himself focus and strength in battle. Sometimes his hate comes at a price and blinds his actions. The bloodluster is like a shark that gets a taste of his victim, focused and angry, attacking with an intent to destroy. Their focused determination tends to show in the rest of their actions as well. If they start a task they do their best to finish it. It's said that having a bloodluster as a friend might not be the best idea, but it beats having one as an enemy.
Hatecasting (Ex): Starting at 5th level the anger a bloodluster feels shows when he draws blood on his foe. After he damages a foe with a melee attack he gains a +2 morale bonus to all other attack rolls, damage, saves, and AC vs. the person he damaged and he in turn gets a -2 to all other foes in combat. This bonus increases to +4 at 10th level, but the -2 from other foes stays the same. In addition at the start of every turn after the bloodluster damages a foe he must make a Will save at DC = 10 + his pugilist level. If he fails his save he must continue to attack that round. If something stops him from attacking for a round he need not make the save to stop.
Seeing Red (Ex): Starting at 10th level his hate is absolute. Treat the bloodluster as if he was under the effects of mind blank and freedom of movement once he damages a foe. This ability stops as soon as he goes a round without attacking a foe.
Assault (Ex): Starting at 16th level the unrelenting chaos of his attacks come in strange bursts. When a bloodluster uses a full attack action he continues until he misses subtracting four from his BAB for each iterative attack after the first. This replaces the normal additional strikes from high BAB.