Instructions
Listen to Ingrid for instructions. She will hand you an engineer's handbook. Ingrid will also tell you to repair the Barnacle Blast game by reading the instructions on the clipboard.
Find the keyboard in the haunted house. Go to the end of the hallway. Grab the keyboard by the shark.
Return to the Midway (where you spoke with Ingrid). Click on the side of the Barnacle Blast game. Use your access card to open the back door to the game. Attach the keyboard.
A blue screen with code will appear. Look back at the keyboard on the left to find the instructions. Type in "Super" in front of "Barnacle Blast." Hit Enter. Type the serial number in the adjacent space. The serial number is shown on the front door of the game, which is KM5200.
Play the Barnacle Blast game. Keep playing until you hit all the circular barnacles with the ball.