Hidden 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. 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.


by unknown