Mass Effect 2's lead combat designer, Christina Norman, has spilled the beans on the game's Engineer class to IGN, and told the site that the class is more "strategic" and less "brute force".
"We wanted playing the engineer to have a unique feel to it," Norman told the site. "We designed the Engineer to play as a more strategic, less brute force, class. Perhaps the most strategic move an Engineer can make is using his powers to gain strength in numbers via Combat Drone and AI Hack.
"Combat Drone is a new power that only Engineers get. When you summon a combat drone it will harass enemies, drawing fire away from you, and knocking enemies out of cover. Your combat drone can die, but you can summon a new one every few seconds. Smart engineers will make sure they always have a combat drone active on their side.
"AI Hack is a power that lets you take control of a mechanical enemy. We've improved hack from ME1. It's now a true "charm" ability -- hacked enemies will not turn on you even if you shoot them. Hack also puts a powerful defensive shield on the hacked target, which helps ensure your new pet will survive long enough to be useful. When your pet dies you can always hack a new one, as long as there are synthetic opponents available.
"With Combat Drone and AI Hack, plus his two squad mates, Engineers command a larger team than any other class. "
There's a video posted below the break of the Engineer being a bad ass. You should have a watch.