Still getting a hang of the Volus Adept. I die a lot, even if I spam Shield Boost. I need to learn to use the mini-cloak they get instead of melee. It can be a lifesaver. And when used right, Shield Boost can let the squad face off an Atlas without much danger.
Also, I'm not sure about something. Namely, whether or not Energy Drain detonates fire explosions. I thought it did, but it doesn't seem to work.
Finally, I unlocked Piranha just now. I'll try it out with my Krogan Soldier and see how it works.