Hint: Secret Flea area:
In the Lower East Quack level, go past the area where you hitch a ride on
the subway train. Go to the end where you see a brown fence and a little
hole at the lower left side. When you are there, turn left to find a Chang
transport. Once you are Chang go though the hole, and on to the boxes. Chang
will start scratching himself all over. You will then be transported on
his back as a flea with a heavy-machine gun.
Hint: Land Of Moles multi-player level:
In the first level in New Quack City, if you remember pushing a model building
to block a camera, there is a computer in the computer room that is destructable.
Shoot it until it explodes and you will unlock a secret multi-player level.
Note: Your green target will turn red on the described computer . The target
will turn red if you can shoot something and get a reaction -- keep that
in mind when exploring.
Hint: Matrix-style scene:
In the Lower East Quack level, shoot three baskets in a row without missing
on the basketball court. Press Start to start the view.
Hint: Fleas for Roofus:
In one of the beaver dam levels are some porta-potties near the end. Become
Chang and kill all the enemies that appear from the porta-potties. There
should be a Roofus transport nearby. Turn into Roofus, and behind the final
porta-pottie on the left (looking in the direction opposite of the hill
where Chang is located) should be a hole. Enter it to find some fleas. Walk
into them and it will transport you to a level where you are a flea with
a heavy machine gun. Kill all the ticks and Roofus will get a close up attack
upgrade.