Easy
21. Tyson
22. Apollo
23. Visit the Oracle
24. Hermes
25. Hephaestus

Medium
21. The Golden Fleece
22. Artemis
23. The Princess Andromeda
24. Circe
25. Grover

Hard
21. Seven
22. She tried to become the Oracle of Delphi
23. The General
24. Poison
25. South Florida, Texas, Hawaii, New Mexico, Rhode Island, South Dakota and Delaware