Avengers Cryptic Crossword

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Across
  1. 3. Old soldier, skipper, one in awful shooter
  2. 6. Old wound allow western discomfort for reality bender
  3. 8. Avenger's playboy is female
  4. 9. Shield bearer in offal constantly
  5. 10. Odd chirurgeon
  6. 12. This white, Anglo-Saxon Protestant is a white, Anglo-Saxon Protestant
Down
  1. 1. This hero is a sight
  2. 2. Bishop deficiency at viewport, not new, gives KGB defector
  3. 4. Because he hurth
  4. 5. Needing potassium, cowboy's yell badly at sniper
  5. 7. Heroic, ugly, lone king, initially, is just one of his personas
  6. 11. Ex-thief tirade, not right, one-thousand indefinite article