DESTROY ALL HUMANS! BIG WILLY UNLEASHED TIPS & TRICKS
Aliens attack Harbor City
Destroy boxes on first ship that is closest to the small fleet by the big Willy. With the flying saucers death ray and there will be a yellow square, then get out of the saucer and step on the yellow square that is on the ship, then there will be a flash and a lot of aliens will attack Harbor city.
Aliens attack Vietmahl
Go behind the ancient building that the two armys are fighting infront of and stand on the yellow square, There will be a flash and aliens will start attacking Vietmahl.
Aliens attack Fairfield
Go into the corn field next to the old power station and walk on the yellow square, There will be a flash and aliens will start attacking Fairfield.