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All answers having "Ruined" as clue:

4 Character Answers:

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GONE

LOST

SHOT

TORE



5 Character Answers:

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DIDIN

KAPUT

UNDID



6 Character Answers:

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COOKED

LOUSED

MARRED

SOILED

SPOILT

UNDONE



7 Character Answers:

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BOTCHED

DONEFOR

SPOILED

TRASHED



8 Character Answers:

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DERELICT



9 Character Answers:

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DESTROYED

GONETOPOT



10 Character Answers:

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DEMOLISHED

DOWNFALLEN

UPTHESPOUT



11 Character Answers:

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ALLWASHEDUP



13 Character Answers:

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GONETOTHEDOGS