easiest way to do it is to hang around refuge point for a while, just hang out and take ur time. when u see the stormgarde gaurds riding out on their horses walk beside them or behind them. they'll be walking to meet the undead right at the cross in the road. when ur close, run in, pull the undead and retreat to the gaurds. they'll kill everything for you and you can just kill the courier. you'll get th drop and not loose any {major} health.