Original Splatterhouse game:
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Successfully complete Phases 1 and 2 to unlock the original
Splatterhouse game.
Splatterhouse 2 game:
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Successfully complete Phases 3 and 4 to unlock the Splatterhouse 2 game.
Splatterhouse 3 game:
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Successfully complete Phases 5 through 8 to unlock the /Splatterhouse 3/
game.
Special mask for Rick:
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Successfully complete the game to unlock a special mask for Rick.
Survival arenas:
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Successfully complete the game to unlock survival arenas.