I haven't completed a single quest :o. But, we have what we have!

Kamikaze, what are you saying about the captured Eyes? Where do they surrender, and how many are there? For me, only the Serpents surrendered somewhere in the Dungeon, and there were fewer than 20 of them, as far as I remember. But they were very useful in defeating Legions and Hundreds. On the battlefield, artificial hiding places were created from natural obstacles and blinded units (it was enough to blind 2-3 squads in certain areas of the battlefield). Harpies hid there, a clone was made, and a meat grinder began with five or four squads of meat that simply ran after the Serpent. In general, it could have been done without the Serpent, but it was complicated by the fact that then the enemy squads took a defensive stance, which increased their defense and led to greater mana consumption in battle. In fact, I probably wouldn't have won the first meat grinder battle without the Serpent, because I didn't have much mana, and I didn't have the Ring of the Magician or the Spirit of Despair. I played this battle for two days until I managed to catch the end of the battle WITHOUT morale on the enemy side :)