Buren Wanzer for the OCU story
Beat the OCU story for the first time.

Next New Game
Beat the game once.

Sound Test
Beat the game once.

TCK Assault Wanzer for the USN story
Beat the USN story for the first time.

x0.5 (overrides x0.8) and x1.5 difficulties
Beat the game twice.

x0.8 and x1.2 difficulties
Beat the game once.

x10.0 difficulty
Beat the game five times.

x2.0 difficulty
Beat the game three times.

x5.0 difficulty
Beat the game four times.