Lvl 42 Rogue. Stealthed in all the way. Stood just inside the door, pulled the nearest guard with my bow, but as he died, he called over the other guard & the Prince. So, I Vanished. waited for my health to get back to full, then Sapped the other guard, took the Prince down (quite easy, Ambushed him then just killed him - had poison on both weapons). Killed the other guard (I think I had to hit Evade in case). Looted them all, Stealthed out, jumped off the bridge to save a bit of time coming back out.