In horde mode, most players will choose either the church or the balcony-overlook as their starting command post due to the weapon spawn and abundance of cover and upgrades at both. Due to the openness of the map, Mercy tends to be one of the more difficult Beast mode maps, but should be no trouble for a coordinated team. The Easter Egg in Mercy can be triggered once you hear bell chimes from the church. While the bells are ringing, a picture of Dom & Maria can be found where the Boomshot\Digger launcher are. Shooting it will trigger an audio clip of Dom crying.