The map features many custom triggered skills for each MOS and enemy alike, ranging from cauterizing injured marines to obliterating enemies in artillery fire. Medals are also earned through the game, through various means and provide small stat benefits, and are mostly just like achievements.
However, with such benefits also comes drawbacks: higher experience means the game's squad rating is higher and the difficulty of the game also increases, where new and more challenging enemies spawn, new events occur and as one gains ranks, decrease in HP. At certain intervals of experience, players are "promoted" and receive new benefits, such as unlocking new MOS to play as, sidearms, pets and such. As the players complete missions and combat zulus in multiplayer games (not single player), they earn experience which they are able to save to the name used when playing the game. NotD:AM features a rank system using save/load codes generated in the game itself. The map has a steep learning curve and unless you have significant experience in maps such as this, it may take some time to fully understand and grasp how the map works and plays. Players take the role of a marine in 3rd Platoon, Echo Company of the United States Marine Corps in order to combat the endless swarms of a zombie (technically not a zombie, but that doesn't matter) outbreak, selecting a Military Occupation Speciality (MOS) each with their own unique group of skills and benefits, and completing missions all the while surviving the onslaught of zombies of all caliber. Night of the Dead: Aftermath is a custom cooperative survival map with many elements of a RPG, on WarCraft 3.