Added 37 minutes ago
I took the time to write it all down. All the Guardians are different level 33 elementals, all mages, all packed with artifacts, all with insane initiative (they go first, and by the time my main hero takes a turn, they have 2-3 actions left). So, starting from the Castle and going clockwise:
№ 1 Water (28-26-26-27, 7 Spirit, 2 Luck), troops: 1962 Water Elementals, 976 High Druids, 597 Ark Arcanists, 507 Djinn Sultans, 126 Seraphs;
№ 2
Added 12 minutes ago
№ 2 Fire (12-21-45-27, 3+5), troops: 1962 Fire Elementals, 1269 Forest Archers, 507 Adepts, 253 Shadow Lords, 126 Titans;
№ 3 Earth (30-31-17-22, 3+2), troops: 1962 Earth Elementals, 976 Dark Knights, 507 War Unicorns, 253 Kshatriya Rakshasa, 126 Lava Dragons;
№ 4 Air (19-20-32-33, 3+3), troops: 1962 Air Elementals, 976 War Griffons, 253 Manticores, 253 Jarls, 126 Crystal Dragons.
Meanwhile, in 5 months of playing, I managed, through hard work and constant battles with the besiegers, to reach level 34 (26-29-26-16, 9+9 with the available artifacts, the best of which is a bow with a quiver) and accumulate the following troops: 34 Landlords (to cover the Battle Mages), 867 Archers, 541 Adepts, 28 Paladins, 47 Archangels. So, how am I supposed to fight? I repeat, I've tried, I've experimented (thankfully, I have a mentor nearby), but it's all in vain. Hence my belief that no Guardian can be defeated fairly.