Percy Jackson

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Across
  1. 3. certificate showing successful completion of a course of study
  2. 4. feeling pity or sorrow for someone
  3. 6. mounted projectile-firing guns or missile launchers
  4. 8. the highest singing voice in a 4-part chorus
  5. 9. sac which urine collects in
Down
  1. 1. sound of things that go together well
  2. 2. unusually or abnormally active
  3. 5. a person subject to or having dyslexia
  4. 7. a stick with a pointed or electrically charged end
  5. 10. a sand hill or sand ridge formed by the wind