Engineer

Engineers, as the name suggests, are the Dwarven masters of technology and gadgets, continuing a long tradition of engineering craftsmanship. They employ their expertise to great effect in combat, shooting blunderbusses, throwing grenades at the enemy and even calling down artillery bombardments. In melee, they employ even more explosives or pummel their foes into submission using their engineering spanners and other assorted tools.

Due to the explosive nature of many of their attacks, engineers are best suited for fighting enemies in large groups or tight formations. They attack from afar, but their most damaging attacks are mostly short to medium range, making it imperative that the engineer keeps on his toes and moving throughout the battle. They must always be aware of their position, maneuvering themselves so that they can strike at their target without exposing themselves to enemy attacks.
 

While not as durable as their Ironbreaker or Hammerer cousins, the engineers' ability to actually impose a threat beyond direct melee range makes him an indispensable tool in the Dwarven arsenal.

Gadgets, tools and more gadgets are the hallmarks of the Engineer. Through their affiliation with technology, they are able to produce wondrous devices that aid their allies and hinder their enemies. Some of the devices may even be passed on and used by other non-engineer allies.

Each mastery tree allows the Engineer to focus his abilities according to play style and taste.

Path Of The Rifleman

This path focuses on long-range attacks, and taking your time with carefully aimed precision shots. A master of this path prefers to stand back away from the hectic front lines of battle, and dispatch his enemies quickly and cleanly from behind defensive cover.

Path Of The Grenadier

This mastery is primarily focused on grenades and bombs, powerful explosives which may be quickly tossed into the middle of a fray to wreak havoc on enemies. While their effective range may be shorter than a gun's - after all, Dwarf arms aren't exactly built to throw for distance - grenades make up for this through sheer stopping power and swift arming times.

Path Of The Tinkerer

A specialist in this path is concerned mainly with his deployable constructs, preferring to fight from near the safety of his turrets while he lays out his foes with swings of his heavy steel wrench. Master tinkerers have also been known to use additional deployable devices above and beyond turrets as well, and many are the Engineers who've been banned for life from a blacksmith's forge after trying to test and improve the heat thresholds of land mines.

Information Found At: http://warhammeronline.wikia.com/wiki/Engineer