Opening the bridge:
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On level 2, to open the bridge there are four switches.
Press switches 1, 2, and 4.

Weird Wild West: Safe code:
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The safe which is in the bank has a three digit code. The code
is „1-3-7”. It can be found written on the blackboard in the schoolhouse.

Hi-Tech Terror: Getting the red access card:
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When you need the access card so that Scooby and Shaggy can get
through the mist. You must first three mists then go to one of
the lockers. One should open and have the red access card inside.
Then, go over to the controls so that you can get the robot. Take
it over to the red access card door. The door should then open.
Go in and turn off all of the knobs. You are now able to go through
the door that was blocked by steam.

Weird Wild West: Busting Freddy out of jail:
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On the other side of main street from the jail where you have to bust
Fred out, there will be a small alleyway. Have Scooby crawl underneath
the fence to find the liquid soap, then go back to the side of the jail
where the hole is blocked by the cart full of gold. Use the liquid soap,
and it will slip right over.