That works also, slowly walk into them from behind until they are close to the edge then do it. also keep hitting them so they can't get back up. I also use fists of havoc on the pikes so it forces everyone to use sparrows and skip that part. Another tip if if they're both killing enemies in the first room I will run to the wave area and kill myself so it forces them to respawn by me, if they do this after the wave area and fight the hydras I do the same thing in the Priest area. #Aintnobodygottimeforthat