Fixed Camera View
During gameplay hold Circle X Start. The game will pause. Press Start to resume with the camera fixed at the prelocation. For the Japanese version press Circle X Select.
Continue from Armored Core: Project Phantasma
Insert a memory card with a saved game from AC: PP. At the Loading screen the file will appear yellow. Load that file to start with the same parts and money that were obtained in that game.
Make a design at the Edit Emblem screen. When you're done hold L1 R1 Select. Now design the new background.
First Person View
During gameplay hold Triangle square Start. Release the buttons and press Start again.