re "unvetted" and difficulty thereof : there are already reviews of its difficulty elsewhere on the Web, e.g. from Goodreads:

https://www.goodreads.com/review/show/6752242 https://www.goodreads.com/review/show/4827595524

1. Telemachus. Difficulty : 0 2. Nestor. Difficulty : 0 3. Proteus Difficulty : 9 4. Calypso. Difficulty : 5 5. The Lotus Eaters. Difficulty : 4 6. Hades. Difficulty : 3 7. Aeolus. Difficulty : 5 8. The Laestrygonians. Difficulty : 5

etc.