[Snake]

I disagree with it being main class only, unless Demon Hunter's transformation grants them +1 bonus Momentum on a critical hit.

Anyway, another food for thought after I slept on this:

Reaver Combos:
>> If you use Soldier or Demon Hunter skills consecutively, they will gain bonus effects.

Chaser
>> Drags the enemy along the ride if not done airborne, ignoring Knockback or Pull immunity.

Rising Tide
>> If both you and your enemy are not Airborne, the momentum cost is refunded once per round but this skill gains a 2 round cooldown.

Elemental Rave
>> Attacks are doubled, performing 8 swift strikes instead of 4. If all attacks hit, the enemy is inflicted with Nulled until your next round.

Lead Storm
>> The attack cannot be fully avoided. (Full Evade becomes a Glancing Blow) You restore 3M if you are Airborne and not under the effects of Jump Cancel. Gain Jump Cancel afterwards and lose Airborne.

Wild Ride
>> Can be used even if the enemy is not Knocked Down. The enemy also takes a stomp along the ride, for every tile moved, taking Blunt damage.

Descending Uroboros
>> Inflicts the enemy with Clumsy and Worn Out LV20 until your next round. You restore 3M if you are Airborne and not under the effects of Jump Cancel. Gain Jump Cancel afterwards and lose Airborne.

Retaliate
>> The attack cannot be avoided. Knocks back 1 tile per 10 Rage Energy used. You restore FP equal to the amount of Rage Energy used. Reduces your Momentum to 0.

Crashing Bull
>> The attack cannot be fully avoided. (Full Evade becomes a Glancing Blow) You restore 3M if you are Airborne and not under the effects of Jump Cancel. Gain Jump Cancel afterwards and lose Airborne.

Bellowing Stag
>> The attack cannot be fully avoided. (Full Evade becomes a Glancing Blow)

Wild Shinken
>> If no target is attacked, the projectile will become 3 tiles wide and gain piercing properties.
>> If a target is attacked, no projectile will be created, instead the target will be knocked back by the distance of the projectile and all enemies in 2 range of them will take slash damage, while they take blunt damage.

Wild Thousand Stab
>> Attacks are TRIPLED, performing 12 swift, evade-ignoring strikes instead of 4. This will also inflict or empower Wear Out by LV2, which lasts for 2 rounds, and caps at (3 + Demon Hunter Class LV/2).

Wild Turnover
>> You will slam them two extra times, dealing additional blunt damage. If there is a field object or an enemy in the way, they will be knocked down. (The enemy will be knocked back and knocked down)

Wild Roundtrip
>> Your weapon will drag the enemy along the ride forward, and on the way back. Each time the enemy moves, they take slash damage.

Wild Mad Chop
>> Every chop will knock the enemy back by 2 squares and you will teleport to a random cardinal by them. If all attacks hit, they will be inflicted with Clumsy until your next round.

Wild Incise
>> Lingering Damage will be immediately maxed and the duration is extended to 3 rounds.

Wild Execute
>> (is this even possible?) It will inflict Certain Defeat for 10 rounds if the enemy is defeated by this attack.
>> Or maybe a shockwave will be released from the attack, damaging nearby enemies within a 3 range diamond of the target for half of the damage.

Wild Retreating Swipe
>> If you have a Gun as your sub-weapon, you will perform a basic attack with it, while sliding away 2 extra tiles.

This is not my wishlist, just ideas to get the gears turning on how cool a combo-oriented Demon Hunter could ever be.

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Oh yeah, on top of that.

Demon Breaker should only be usable by mortal races. So no Dullahan, Lich, Vampire(?) are capable of using it. Mechanations would be a very far stretch.

We can think of lore implications giving that. Maybe it's a certain adrenaline a Demon Hunter feels that comes with the fear of death, since they're pretty much built to fight the unfightable.

Also, about that skill in particular.

Why not make it only possible to activate while under 50% HP for more anime moments?