Quiz on my face

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Across
  1. 2. ancient mesoamerican civilisation (5)
  2. 4. soviet leader / "tear down this wall" (8)
  3. 6. approximately (5)
  4. 10. famous ww2 battle / stick out (5)
  5. 11. boney m. song (8)
  6. 12. the maid of orleans (4,2,3)
  7. 14. _ Lecter / _ Buress (8)
  8. 17. sedentary cow (6,4)
  9. 18. duke of _ / beef pastry (10)
  10. 20. survey of england by william the conqueror (8)
  11. 22. _ H. oswald / Robert E. _ (3)
  12. 23. teacher of aristotle (5)
  13. 24. current geological epoch (8)
  14. 25. war of the _ (5)
Down
  1. 1. peruvian landmark (5,6)
  2. 2. Chronological historic record (5)
  3. 3. author of perisan expedition (8)
  4. 5. reigning royal monarch (7)
  5. 7. surpass / 45th president (5)
  6. 8. historic region between euphrates and tigris rivers (11)
  7. 9. french puppet state 1940 - 1944 (5)
  8. 13. hurt joint / navajo (7,4)
  9. 15. istanbul, formerly _ (14)
  10. 16. last prince of wales (7)
  11. 19. famous prison (8)
  12. 21. joaquin phoenix / strangled (8)