Upgrades for Route Z - iPhone iPod

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• Upgrades

Start by upgrading your fuel tanks at least two times. However, do not do this until completing the mission that requires you to run out of fuel for a specific number of times. The more fuel you have to use, the more difficult it becomes. The next item to upgrade should be your shield. Increase it to level 5. Upgrade your armor when special zombies begin giving you problems. Do not bother upgrading weapons until you have purchased the second car.

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