First of all this achievement is luck-based. However I do believe there are three things to take into account that MAY increase your chances:
- Play on easy, public 4 players
- Don't quit at wave 5 stay until wave 10, I have rarely seen a super at wave 5
- The map DOES NOT MATTER
As you may have noticed the more players in the game the more zombies there are. So I
believe this means the more chance of a super wave to make it harder for 4 players.
I have done this on both 360 and XB1 now and I must have played about 20+ solo matches on easy jewel junction night. Never got a vampire super or barely even a super wave. Once I tried public play on the XB1 I got a vampire super on my 4th game. Port scallywag easy on the 10th wave. I joined on the 4th wave and there were 4 players at that point.
On the 360 I got it on my 3rd game and the only other difference was it was the garden center map.
Also there is no reason to play on any other difficulty other than easy in my opinion. The super vampire wave is actually quite hard so don't make it harder for yourself. So if you are lucky enough to get one you still have to be able to beat it.
This is only what I recommend. You could get it using the complete opposite of this but I think the main thing is to play with maximum players and play to wave 10 to give the best chance of getting one.
Hope this helps and If you get one, pray you or the host does not disconnect