Extra Options
Press L1 or R1 at the option screen to display more options
Reveal the signs
Unlock all 5 endings and then start a new game
Getting the chainsaw
Complete the game under the normal difficulty and normal riddle difficulty settings. Start a new game to find the Chain Saw in a bunch of logs."trust me you will hear it"
Getting the Hyper Spay
Complete the game two times. Start a new game to find the Hyper Spray on the south side of the motor home.