Can't recall correctly, but it was the boss of large battlefield where you have to chase that absolute nightmare across map and finally ends up in a fort full of HORDES.
It was the most frustrating boss for me, 8th times just simply got decimated, most of the time by the horde tho.
The joy I got when finally clear it is indescribable
I feel like a kid again playing this game, so much fun and so much things to combine. Love every bit.
*welp, some part needs a bit of balance but I'll manage. Waiting devs further announcement*