Guild Wars 2's Last Stand at Southsun Cove content? You're in luck, because ArenaNet has penned a guide that will point you in the right direction. Depending on your level of spoiler sensitivity, you may want to stick with the Spoiler-Free Mini Guide. If you're more of an all-spoilers-all-the-time type, go ahead and peruse the New Rewards and New Achievements section of the guide while you're at it.
We would tell you more, but then there'd be no reason to click through to the guide itself, now would there?