Engineer
“Engineers are technical masters. They can assemble a turret that fires a barrage of bullets, dealing damage to enemies. If enemies dare to approach Engineers in a melee fight, they'll either take a wrench to the head or be shot with a revolver at point-blank range. Each successful attack grants Engineers combo points, which empower their later attacks.
The Engineer is a Mercenary Mastery that wields a wrench and revolver.
Abilities
The Engineer's abilities can be seen below:
Q (Berserker)
The Berserker throws an axe at the target location, decreasing movement speed and dealing physical damage ( 
Attack Power) to all enemies it passes through. Picking up the axe gives reduces this ability's cooldown by 3 seconds.
The damage dealt is increased by 20% if the Berserker's rage is greater than 49.
Attack Power) to all enemies it passes through. Picking up the axe gives reduces this ability's cooldown by 3 seconds.The damage dealt is increased by 20% if the Berserker's rage is greater than 49.
W (Berserker)
The Berserker gets +100% 
Attack Speed for the next 4 basic attacks. The fourth basic attack deals additional physical damage ( Attack Power).
The target enemy bleeds (Strength) if the Berserker's rage is greater than 49.
Attack Speed for the next 4 basic attacks. The fourth basic attack deals additional physical damage ( Attack Power).The target enemy bleeds (Strength) if the Berserker's rage is greater than 49.
E (Berserker)
The Berserker leaps into the target location, stunning all enemies within the blast radius for 1 second and dealing physical damage (Dexterity).
The leap generates 25 rage.
The leap generates 25 rage.
R (Berserker)
The Berserker uses all accumulated rage, increasing attack speed (Dexterity) by 20% and damage dealt by 30% (Strength) over 10 seconds.
Whilst the ability is active, the Berserker gains twice as much rage.
Whilst the ability is active, the Berserker gains twice as much rage.
Special (Berserker)
The Berserker's basic attack generates 7 rage (critical damage generates 14 rage).
Attack Power is based upon their 
Health.
The Berserker has a 20% chance to land an additional hit after the basic attack.
Attack Power is based upon their Health.