How to do: the first cinematic plays, press both the touchpad and menu button at the same time. When you do so, the debug menu opens up. From there, you can change options such as health. To complete the game, go to Reload, and then set the mission to GP_A3_EPILOUGE and the objective to Mission Complete.

Nice. But at risk of stating the obvious, debug menu definitely would not be allowed for any actual categories. Making separate categories for it would also be pretty silly since it's gonna get patched out in the very near future, likely in the next few hours.