You're not tied down to a single class in Avowed—instead, you can use any weapon combinations you like. Add to that three ability trees that you can freely level up in, and it's possible to create a lot of unique builds. While that does give you a plenty of freedom, it also makes it tricky to figure out which are the best abilities and weapons to choose for your playstyle.
I've recently had a lengthy hands-on with a preview build of the game, and while I didn't get to play long enough to explore late-game combinations, I did get enough experience to give you some good advice for the best builds in the early game to get you started.
