Breakdown Cheats

Faster reload:
Right after pushing L to reload, press L3 to block. When L3 is released, your weapon will be instantly reloaded.

Expert mode:
Finish the game under the normal or hard difficulty to unlock the expert difficulty setting.

Completion bonuses:
After finishing the game you will unlock the "Trailer" option and all entries in the "Gallery" and "Sound Test" screens.

Spread fingered gesture:
Hold Block then press White, Black.

Alternate ending sequence:
After Alex becomes affected by the Pendulum effect and begins to float outside the helicopter, have Derrick walk out of the helicopter towards her. You will also enter the Pendulum effect and can enter the future with Alex to start an alternate ending sequence.
User Cheat by CaptainSandman