Apocalyptic crossword

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Across
  1. 2. keep it going
  2. 4. to surrender
  3. 8. a children’s doctor
  4. 10. not aware
  5. 11. someone who plays music
  6. 12. make a hole in
Down
  1. 1. a broken limb
  2. 3. rock for roads
  3. 5. someone really annoying
  4. 6. a written law
  5. 7. an admirable quality
  6. 9. priceless and old