At the north end of the Bridge map, using the "Kangaroo on Command" power up will allow the player to scale the rock wall border of the map and enter a secret room. Upon entering the room, a message will state "Friggin Kangaroo on Command freak." Turning around from that message will show another large message that says "Now you are stuck SUCKER" and create an invisible wall that will trap the player in the secret tunnel.