Last solution

Across: 7 Unite; 8 Entered; 9 Earnest; 10 Nails; 12 Free-for-all; 15 Disloyalty; 18 Stout; 19 Element; 21 Kindred; 22 Sound.

Down: 1 Supersedes; 2 Fiery; 3 Here; 4 Seethe; 5 Stand out; 6 Arrival; 11 Solicitude; 13 Roosters; 14 Astound; 16 Amends; 17 Demur; 20 Easy.