File:Quake1.gif DMAS13: Glen Sheen Game Episode Designer Level Editor Soundtrack Level Theme Previous Map Next Map [Source] Glen Sheen is the thirteenth and final level of DEATHMATCH Maps. This level is missing from the "Aftershock Levels" tab of the level select screen, but is found with all other DEATHMATCH Maps in the tab for the Aftershock Standalone Levels. The exit Teleporter is near a staircase in a room filled with a series of thin columns.