If you want to progress throughout the graveyard you're going to need keys. Mother Mary now spawns keys more regularly (for the moment). She will spawn...
If you want to progress throughout the graveyard you're going to need keys. Mother Mary now spawns keys more regularly (for the moment). She will spawn keys at a random point every 30secs to 2mins. Keys will vanish after 30 seconds. Beware, Mary is a zombie attraction.