This power is especially helpful when it comes to getting the enemy's attention and distracting them while you unleash your different assortments of powers. Forum Posts. I'll tell you about overload, incinerate, cyro blast, AI hacking, and combat drone. Sign in. Followers. The wonderful thing about Mass Effect 2's Engineer is that we have the class power, combat drone. If you want to be an engineer in Mass Effect 2, then you should have a really good understanding of the engineer abilities. Using the holographic omni-tool, they can decrypt security systems, repair or modify technical equipment, disrupt enemy weapons or shields, and heal their squad.