Here are rundowns of both classes
One of my favorite multiplayer modes of all time is returning to Splinter Cell: Blacklist in the form of Spies vs. Mercs, and these two new videos will give you a rundown of each class. If you’re itching for information, Community Developer Zack Cooper and Level Design Director Geoff Ellenor have provided extensive 10 minute videos detailing pretty much everything you could ask for, including general tactics, loadouts, and more.
Provided the online community stays put for a while, I think this is going to be my go-to game for the next few years, as this is shaping up to look pretty amazing.