Killer 7 [PSX]
Killer 8: 100 Serum Vials:
Press Down, R1, Up, L1, Square, X, Triangle(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.
Hopper 7 mode
Successfully complete the game on the Killer 8 difficulty setting to unlock the Hopper 7 difficulty setting.
Killer 8 mode
Successfully complete the game on the normal or hard difficulty setting to unlock the Killer 8 difficulty setting.
Play as Young Harman
Successfully complete the game on the normal or hard difficulty setting to unlock Young Harman.
Thick Blood and Serum
Thick blood is not carried over from stage to stage, but serum is. The blood machine in each stage will cease to function if you revisit the stage, so learn to collect as much thick blood as possible in a stage and break the machine before moving on.
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