From the SarcasticGamer.com article:
"Welcome to the second in a series of guides for the different starting classes in Mass Effect 2! If you enjoy this guide, check out our other Survival Guides.
One great thing about Mass Effect 2 is the different classes to choose from in order to tailor the game to your liking. If you want to try something different, something a bit more tactical, choose the engineer. While the engineer is not that powerful when it comes to pure firepower, the class excels at crowd control and distracting enemies, without having to fire a single shot. That is not an exaggeration. While the other party members may still use weapons, Shepherd can actually clear a room solely with the use of the powers. So, read on, and I'll [author, SarcasticGamer.com's darkwonders] give you my Engineer pros and cons, along with the power setups that I felt worked the best throughout the game."