Enemy territory quake wars is a game of basic attack and defend.
Playing this game will give you two teams to play as, on is the Human resistance called GDF and the other is the invading aliens called Strogg.
Each team has 5 classes and although different names the abilities are the same.
The GDF have the soldier, Medic, Engineer, Special ops and the covert ops.
The strogg have the Aggressor, Technician, Constructor, Oppressor and the Infiltrator.