Killer 7 – Platform: Gamecube

Killer 8: 100 Serum Vials:
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Press Down, R, Up, L, Y, B, X, A(2), at the the „Press Start” screen.
The healing sound will confirm correct code entry. You will get the
vials when you start Target: Angel. Repeat the level over with the code
enabled to get another 100 vials.

Unlock Hopper 7 mode:
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Complete Killer 8 mode.

Unlock Killer 8 Hard mode:
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Complete full game on Normal or Hard mode.

Unlock Young Harman:
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Complete full game on Normal or Hard mode.

Alternate ending sequence:
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Successfully complete Killer 8 mode.