Turbine's official Dungeons & Dragons Online: Stormreach website has been updated with an eighth beta journal, which once again offers different tactics that will help keep your party alive. For you rogues out there:
Rogues are your best searchers and are the only class that can open locks and disable traps. Along with rangers, rogues are the best scouts for detecting ambushes and traps. Rogues/Rangers should lead the party moving silently. The party should hang back at least forty feet, if not more. In melee combat, rogues should use their Hide/Move Silently to get behind the enemy group and backstab the casters. There are certain quests where this is a very effective way to handle tough opponents. It's in all the party pre-battle setup.