here's a tip for gaining alot of exp, do the story quest (the great hydra) pave the four squares and use only one generals soldiers, use the second type and place them on all squares, remember to level your soldiers on field
the games ok but after i maxed out 8 peoples damage and speed and put them behind a baracade the ombies couldn't touch it, i can get max kills and i dont even have to use molotovs, could be a bit more challenging, zombies only come from one direction.
 "Protector IV"){kind=icon}
 "Luncheon Of The Dead"){kind=icon}