Yes.

I am not sure if this is intended behavior but when I fought Mazdamundi, I discovered that by the end of the battle, his attack and defense went from 50 Attack, 70 Defence to over 800 in attack and defense and his armor was over 200. He was the only enemy left on the field, and before I was able to kill him with my archers but in this battle I have run out of ammo, but my whole army was intact. I figured that I could melee him to death, only to discover that right around when he only has half his health left, his stats were over 800 in attack and defense and my men couldn't kill him. He managed to kill 600 of my men before the timer ran out. I had my entire army fight him in melee for 45 minutes and I couldn't kill him. And since I was attacking, I lost the battle.

I haven't had this problem with any other hero except for Mazdamundi so far. The Lizard men heroes are pretty hardy, which makes sense, but in the case of Mazdamundi, it must be a bug. His stats got so high during the battle, my entire army could not kill him. I don't know if this is a trait he might have, where his attack and defense increases as his health goes down, but so far in the game, I am only able to kill the damn reptile with overwhelming firepower.

At this point, every time I meet the fat lizard, I actually have to tell my archers to hold fire until I beat off his army so they can focus fire on his fat ass. Is he suppose to be 'unkillable' in melee? I know he's riding a beast and all that but his melee defense is so high he just fortnight dances away from every member of my elite army.

I guess I was lucky then and got to him early on so when he was the last alive in a siege i sorta just baited him out of the control zone and got some troops to pin him down long enough to capture and hold the point in like tyrion and a mage

As someone who mains mazdamundi I can tell you right nwo there's no way in SFO as it is to get him to 800 attack/defense. Mod conflict is my guess. Mazda has 2 super cheap casting buffs, sun banner, and then the unforging spell so he can hold his own in a 1v1 but never comes close to 800 attack. Granted I havn't played him since the last sfo update so it's not to say it's not a bug in the current version either.

EDIT: did you mean 80 attack and it was a typo? cuz that actually is possible.

Either way, he shouldnt be able to 1v1 tyrion without taking any damage at all

Shrugs don't know what to tell ya, my mans beefy. He has apotheosis and regen, if you're not able to deliver dmg he's ganna heal through itjust fine.

Maybe we'll see changes with lizard rework.