There is an easy way to double pull these guys. Pull a monster and get the two guards at the gate to attack it. If you are lucky, only one will come. Wait for the guard to kill the monster. If you don't, the monster could steal your kill. Then kill the guard. After this, if you only pulled one guard, repeat the process with the other one. Then kill the other guard. After the front two guards are dead, if you are in the back gate, you should easily be able to single pull the two balcony guards. If you are at the front, you may kill the other spawns as you want. Watch out for wondering historians. They can do some damage.