wish u can use 6 people in ur party so u can use all the tier 2 class its hard to choose witch 4 classes ur gonna use(some people might use 2 or more of the same class)
compound bow + chain saw + 4 survivors = OWNAGE(use compound bow on the side , its strong and fast(not that strong) good for killing the fast ones and chain saw is good for killing the zombies at the barricade
i think this could be an unbeatable cheap force...... spider tanks and flak tanks, flak will handle the air units or sometimes help the spider tanks and the spiders will attack the ground units, and they both only cost 250 and 240 RLY cheap, a good force!
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