This is a fun little cave-runner. The upgrades are an interesting and unique feature. And the "story" from the story mode is hilariously lacking. Good work!
You can walk out of the first location with 4 handguns if you know what you are doing. On the street to the right of the ferry is a crowbar and a handgun. Take the handgun, exit the square, and reenter. The handgun is back! Repeat until you are fully loaded, then head LEFT to get to the subway on the far right without wasting ammo on the zombies in-between. This tip brought to you by the National Zombie Fighting Institute.
Trolls suck...as soon as the enemy starts charging for a troll, send a hail mary of your fastest units down every avenue of attack. Once the giant arrives (if the enemy is still alive), simply fight in every avenue but the giant's. You should overrun the enemy very quickly.
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