Alien Tank Attack

Two players fight against each other. You try to find a tank and you need gas
and some ammunition for your tank. You should also find all pots with the chars
from the password. With all chars you have to decode the password and destroy
the headquarter of your enemy.
You'll also find beepers to open gates, smart bombs (to kill the other player),
mines and rockets. You'll also need something to eat or drink and watch out for
the gas of your tank!