I replayed, taking into account the Manticores; I captured the Castle, losing only 60 Goblins, and after that, everything went smoothly. It's a pity that I didn't notice the second Manticores right away; now there are twice as many Lion Cubs.
I just didn't understand how to survive in the desert and where exactly those damned Lizards are located, near which the Tear is found? When I bought the map, it turned out that there are several stacks of them in the desert...
As for the bugs (0.7), there are only minor ones so far: on the edges of the map, in some places, you can see carts, but you can't take their contents, or there's a booth with a spell, but it's impossible to see what spell it is (near the second Manticores and three pieces of Forgotten Hero's armor).
60 Goblins? I got the "Freezing Cold" spell in the Pyramid, but I still lost 110+ Goblins, a Giant, a Manticores, all the Mages, and a couple of Djinns... Although, I didn't really worry about the losses.
What do Lizards and the Tear have to do with it? The Tear isn't with the Lizards; reread the poem... To travel through the desert, you need to go to the booth in the south of the desert; there you will complete part of the quest... Plus, you need to have certain skills, which you also learn from the poem.
To see the spell, you need to kill a bunch of Cyclops... :)