Entry Requirements
Base Attack Bonus:
Feats: Power Attack

Hit Die: d8

Level BAB Fort Ref Will Special
1st +1 +2 +0 +0 Bloodlust
2nd +2 +3 +0 +0 Crimson Fury
3rd +3 +3 +1 +1 Berserker
Class Skills: Climb, Intimidate, Listen, Jump, Spot, Swim. 2 + Int Modifier Skill Points.

Wpn/Arm Prof: The Bloodstained does not gain any new weapon or armor proficiencies.

Bloodlust (Ex): Once per encounter, the Bloodstained may enter a state of supreme bloodlust that lasts for a number of rounds equal to 2 + the Bloodstained's class level. While in this state, each time the Bloodstained deals 10 or more damage with a melee weapon, they gain 5 temporary hit points. Temporary hit points gained from this ability stack with other forms of temporary hit points and last until the end of the encounter.

While in this state, the Bloodstained cannot fight defensively or take the total defense action, and each round theymust attack the nearest enemy creature if able.

Crimson Fury (Ex): While a second level or higher Bloodstained is in a state of Bloodlust, whenever the Bloodstained deals 15 or more damage with a melee weapon, they gain a bloodstain. For each bloodstain the Bloodstained has, they gain a +1 morale bonus to attack rolls. Bloodstains last for one minute, and each time the Bloodstained gains a bloodstain, the duration is reset to one minute.

Any time the Bloodstained gains temporary hit points from Bloodlust, they may make a special Intimidate check against the damaged target's Will save. If the Bloodstained beats the target's Will save, the target takes takes a stacking -1 morale penalty to their AC and Attack rolls for one minute, to a maximum penalty of the number of Bloodstains the Bloodstained possesses. Multiple successful uses of this ability reset the duration to one minute. This is a mind-affecting fear effect.

Berserker (Ex): At 3rd level, whenever the Bloodstained deals 20 or more damage with a melee weapon while in a state of Bloodlust, they increase the duration of their Bloodlust by one round.

Additionally, any time the Bloodstained deals enough damage to activate bloodlust, crimson fury, or berserker more than once (multiples of 10 for Bloodlust, multiples of 15 for Crimson Fury, and multiples of 20 for Berserker) they may activate the benefits of that class features once for each multiple.
Spoiler: Example
A bloodstained deals 64 damage with a single unarmed strike. They activate Bloodlust's secondary ability six times, gaining 30 temporary hit points and may make six intimidate checks with Crimson Fury, activate Crimson Fury four times, gaining four bloodstains, and activates Berserker thre times, increasing the duration of their Bloodlust by 3 rounds.

NOTE: The damage to activate Bloodstained class features must be Bludgeon, Slashing, or Piercing damage. Any other type of damage does not count towards these class features.