I usually do yellow and green zones till I have about 15-20 leather to take back. I use a modded pipe and whatever secondary weapon I have on hand in my extra pocket ie golf club, stop sign, hockey stick or paddle. I use the second weapon on roamers and the pipe on most everything else. I sneak attack everything I can in all areas. For the red zones I use a modded machete and usually a stop sign as the zombies in there are a bit bigger. Fir the bunker I use the same as red zones I can clear first 3 floors with 3 machete and couple glocks for the frenzied. As for armor basic dad armor for green and yellow. Tack armor fir red and bunker.