Mercenary

The Mercenary gains 2.5% attack speed per level.

In the ending cutscene, the mercenary-specific text says: "..and so he left, never to become human again."

Tactics

 * A typical combo for the mercenary is to Eviscerate into a group of enemies, Whirlwind out, Blinding Assault through them and repeat for the remaining dashes followed up by another Eviscerate.
 * Try to utilize the low cooldown of Whirlwind on top of abusing your long amount of time spent invincible.
 * You can use Whirlwind to get up to places you might normally not be able to, as it does a small jump.
 * Items that reduced cooldowns, such as Wicked Ring or Alien Head, are extremely effective on mercenary as they give you the ability to stay invincible nearly indefinitely.
 * Wicked Ring combined with decent critical chance is devastating against Magma Worms since Whirlwind will reset its own cooldown enabling you to literally climb up a magma worm, dealing incredible amounts of damage.
 * Like all melee classes, items like Tesla Coil, Toxic Worm, and Barbed Wire help to increase damage output when you're in the thick of the fight.