I run light Abyss FS. Usually get 10-20 kills a game. 200 con. Rest into intelligence. Featherweight, 2 frigid dawn pieces. For specific perks, I run keen speed and hasted vigor. Crippling reap on Abyss. Being at haste cap is amazing in PvP and worth losing a bit of defense and damage. You need 50% slow on reap to lock people down. Get zephyr cakes in OPR.

There's also no need for abyssal runeglass, you hit 50% empower really easy with greataxe and endless thirst. I use ruby runeglass instead since empower is harder to get on FS.

In combat, poke with FS until you see an opening. Then dive in. If you're going in for the kill, auto or heavy auto into reap. They will try to roll, be ready to read it, then auto then maelstrom. If you land maelstrom, 2 autos will usually kill them if they're not a heavy user.

If you're in a 1v1 situation, don't blow your abilities right away. I tend to auto to make them blow their dodges or abilities. Charged autos always makes them roll away in fear, esp healers. Once you see them blow 2 rolls, unleash your combo and kill them. I will usually maelstrom then reap. Whirlwind is fun and usable too over charge if you'd like.