Level select:
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Enter the „Extra” menu and enter „RECLAMATION” as a code.
Invincibility:
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Enter the „Extra” menu and enter „SUPERCYC” as a code.
Infinite ammunition:
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Enter the „Extra” menu and enter „TRGRHPY” as a code.
One-hit kills:
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Enter the „Extra” menu and enter „DUSTYAYRES” as a code.
Lancer’s multi-player skin:
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Enter the „Extra” menu and enter „YLLWFLLW” as a code.
Rand’s multi-player skin:
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Enter the „Extra” menu and enter „KIDGLOVES” as a code.
Rook’s multi-player skin:
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Enter the „Extra” menu and enter „BLUEANGLS” as a code.
Scott Bernard’s multi-player skin:
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Enter the „Extra” menu and enter „LTNTCMDR” as a code.
Defeating larger enemies:
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When fighting the bigger enemies, aim for the eyes.