Stapel is dead. Beorn took his last city, the capital of Stapelburg.
Subsequently I attacked his stack with my macemen and crossbowmen...and failed, miserably. I can't call it any different than a bad roll of the dice, because his stack should've been decimated. However, I lost five units (should've been two or three, apart from the catapults) and then he destroyed the rest. Now I have nothing left and need to rush more units.
On top of that, socralynnek is rush building a lot, as can be seen from CivStats. I just spotted two triremes and two galleys. They'll attack me from both sides.
I'm doomed. I'm gonna lose. Again. I'll never ever win a pitboss, and this was my biggest and probably last chance. All gone because of a failed attack.
And perhaps bad diplomacy (with socralynnek).