Real Robot Regiment Full member mode: Hold L1 + R2 + L3, then press Start at the title screen. A sound will confirm correct code entry. Alternately, successfully complete the game in story mode. Gundam: Hold L1 + L2 + L3, then press Start at the title screen. A sound will confirm correct code entry. Alternately, successfully complete the game in story mode. Hyaku Shiki: Hold R1 + R2 + R3, then press Start at the title screen. A sound will confirm correct code entry. Alternately, successfully complete the game in full member mode. Hard difficulty setting: Hold R1 + L2 + R3, then press Start at the title screen. A sound will confirm correct code entry. Alternately, successfully complete the game in full member mode.