Nice game Aeyrst, interesting concept. Could do with a few more levels or something to lengthen the play time, but good idea.
By the way, killing a zombie is worth 1000, but cost money for a shot. Saving a human, on the other hand, is worth 100, but costs nothing. This makes saving humans more profitable IF you kill one zombie with one shot...
Just an FYI... The Great War is World War 1. I assume this is a WW2 setting. Otherwise pretty good game. There are a few things that need checking for the Allies (germans voices/grenades) and, as always, a big thumbs down for the premium content, but otherwise an entertaining game.