Armored Core 3

Add the defeated AC's emblem to your list:
Press Select + Start button, while viewing a defeated AC
on the victory screen.

First person view
Have a saved game files from Armored Core 2 or Armored Core 2: Another
Age on your memory card. Resume in Armored Core 3 from that memory card,
pause the gameplay, after press L1 + R2 + X + Square + D-pad.

Drop your Right arm weapon, Back Unit, and Inside parts:
Hold L1 + L2 + R1 + R2 + Triangle to

Drop Extension parts:
Hold L1 + L2 + R1 + R2 + L3

Drop Left arm weapons:
Hold L1 + L2 + R1 + R2 + Circle to