Keep your equipment up to date, especially your weapon at low lvl. Have friends HQ you the best weapons if at all possible, this will help. Do not get suckered into people saying you have to flash 50 times in a row at the start of a fight to hold aggro... not the case. Pop fight or flight at the beginning of the pull and hit the first mob w/ shield lob, and flash once or twice. At that point, just complete your combo on the primary mob and keep an eye on the emnity, if the mob is almost dead, stun it and move on to the next mob to start building aggro on it before the onslaught comes. You can mingle in a flash every now and then to keep the healer safe or to compensate for multiple dots on enemies, but really this is all you need to do.

Things at this level die pretty quickly and you probably won't need to cycle through multiple mobs w/ your primary emnity combo, flash/overpower should be sufficient.