Thanks - that was a good one, a nice mix of dominos to follow and tricky clues to frown over.
And I never would have guessed the password itself.
Here we go with something that may not be quite as nice. :-/
1. - The king stands before a warren, to devour him subjectively.
2. - "Here, Lou - in!" Only fair, no?
3. - No Gollum, but say "Oh! Win!" to claim sword and shield.
4. - Legolas' end by Gimli denoted on the long shore.
5. - 1, lord of what?
6. - The top and tail of a farmer's song, the head of a sea-maid - a king?
7. - One cloth trumpet for a walker.
8. - Reported by the dwarves: lisping shark, one (French).
9. - Listen, the crowned one is glad: add hay to reel.
10. - A stick or a steed?
11. - He is taken past the family.
12. - Adam fell? Add one at the end, subtract six from the start, flip it around for one of two.
hS