Ashura

Reckless. At the start of its turn, the berserker can gain advantage on all melee weapon attack rolls during that turn, but attack rolls against it have advantage until the start of its next turn.

Floating limbs. allows for longer range on melee attacks up to 10 to 20 feet on melee attacks 

 Spear

Melee or Ranged Weapon Attack: +7 to hit, reach 5 ft. and range 20/60 ft., one target. Hit:11 (2d6 + 4) piercing damage, or 13 (2d8 + 4) piercing damage if used with two hands to make a melee attack.

Flail

Melee Attack:1d8 bludgeoning damage towards 1 or two enemys if 5 meters within him or each other 

Glaive

Melee Attack: 1d10 slashing damage towards one enemy

Greataxe 

Melee Attack: 1d12 slashing towards one enemy

Greatsword

Melee Attack: 2d6 slashing towards everyone in melee range

Halberd

Melee Attack: 1d10 slashing damage towards one enemy

Multi Rush Melee

Use up too three weapons at once hits everything in the 5 meter is uses it on the damage is based on the weapons. Weapons that can hit multiple people add 3 feet to the range of the radius of the attack.

Roll a d4 for health regen 

starts with advantage on the d4 rolls and as it loses health(50% or lower) it rolls with advantage but if healthy(50% or higher) it has disadvantage on healing

As the monster takes more and more damage it gets angrier and angrier getting more and more powerful as it fights the marks become brighter and brighter allowing it to fighter harder and gain strength while healing(no actual damage buffs)

Counter Attack

takes advantage of situation to launch towards enemy and attack does a disadvantage roll on damage because of the attack

Combat Retreat 

while backing up to regain its bearings it uses its arms with weapons to attack doing a damage roll if it hits.