Heart Of Darkness Codes -

Cheat mode:
Hold L1 + L2 + R1 + R2 on controller two and turn on the PlayStation. Keep the buttons pressed and enter the options screen from the main menu with controller one. Then, choose the "Load Game" option from the "Treehouse" screen to select any level or FMV sequence.

Hint: Ignore enemies:
To make enemies appear from only one side and not both sides, duck in the corner so that Andy's rear is just about to show on the other side. The side that Andy's rear is facing is the side that enemies will not appear from.