Argh matey, me guild has done der mission an slaughtered 73 of dem land lubbers.
Okay, that's way too hard to type that way... ahem... anyway, while we have yet to get 100, I do know of a few other guilds who have made the mark. I have been told that the trick is to use a well rounded group; 2 wars, 2 rogues, a chanter and a cleric. Don't waste time at zone in, clear every building on the docks and move fast. The war/rogues make teams to support each other, the cleric uses the only offensive spell when mana is rich to maximize dps, and the chanter is the scout who finds the treasure chests (no-kill drops). It's tough, but with a good, tight group, you should be able to do it; Teamspeak didn't hurt us either. I don't know if you could do this with a pick-up group since play style and focus is important, but it's still fun.