Path of the Oni

A normal man you were once had a nice life with friends and/or family but one day that all changed, somehow they all died and that drove you mad. You murdered people who you saw harm the people you knew.

After that faithful day you've never been the same and now you live your life wielding a dark ability fueled by your rage but also the blood of your enemies. 

Wrath of an Oni

Starting when you choose this path at 3rd level, you gain blood points which the maximum you can have is equal to your level halved you use these for other abilities.
When you damage a creature to below maximum you absorb some blood that leaks out of them, this gives one blood point.
A creature you injure for every 100 feet a creature runs they drop two blood orbs which as a bonus action and sacrificing 5 feet of movement, for each orb, you can absorb them for blood points. They also drop one whenever they take an action involving a skill or object for example a sleight of hand could cause these to drop.

Every orb is worth a single blood point.

You see a mystical aura of every blood orb in 15 feet of you, this becomes 20 feet at 10th level.

This does not affect construct or undead. 

Blood Fury

At 3rd level when you are raging you can use a bonus action to initiate a blood fury this will pause your normal rage timer and last an equal amount of time to a round per blood point you currently have and will drain a blood point per turn.

When in a blood fury you lose the ability to absorb blood points and gain other abilities alongside it. 

Your movement speed increases by 10 feet when you are in your fury, this changes to a 20 feet increase at 10th level.

You can initiate a demon dash where you charge your turning becoming difficult alongside this, without expending movement you move up to two times your movement speed and after every 10 feet of movement you can turn by 45 degrees. When you make the attack action in this charge you make 3 attacks in a direction you face which if a creature fails a strength save versus your fury DC they are made prone however you are stunned until the end of your next turn. Any objects in your way that have an item health equal or less than your strength score is instantly broken, constructs are considered objects for this.

Any weapon you hold when you enter your fury becomes a club that deals 2d8 force damage and has a to hit equal to your fury to hit. The weapon deals double damage to objects. The damage becomes 3d8 at 14th level. 

Blood Fury DC - 8+strength+proficiency

Blood fury to hit - 2+strength+proficiency

Zanshin Tactics

Beginning at 6th level, you become more aware of your environment. You gain an outline of any windows, doors or barricades, this outline is an aura which can be seen at an equal distance to your sense for blood orbs.

Additionally when you are in your blood fury anything that is a medium sized object that can be destroyed by your charge is also outlined.

A construct is considered an object by this affect. 

Secreted objects must be known to the player 

Blood Echo

Beginning at 10th level, when you kill a creature you can spend 3 blood points all creatures that you are hostile to or you know are hostile to you in a 30 feet radius sphere are outlined to you for until your turn ends. They all must also make a constitution save versus your blood fury DC or gain a level of exhaustion and they then start to bleed taking force damage equal to your strength modifier and leave one blood orb.

This doesn't affect constructs or undead. 

A creature can only have one level of exhaustion from this at a time.

Nemesis

Starting at 14th level, when you are targeting a specific creature or if a creature blinds or stuns you they become your obssesion.

Any creature you have as your current obsession is outlined to you and you see the outline as an aura up to your sight range, even through objects. They also lose awareness of the only way they can become aware of your presence is if you are within their sight.