Kagus: You will be proud.
I sent a felon into the goblin pit (which was empty) and let "Zaneg Tinothcilob Lolokvozbel Thazor" chase after him. I locked the door and retracted a bridge, so he could not get out in any way. After killing the decoy, he sat there getting angry because he could not punish the 40 felons or whatever on the waiting list to be beaten. I counted the list of people he hadn't beaten yet, it was 30. He had already beat 29. This means he had beaten almost half of my fortress, and 12 had died because of him.
I constructed a hallway of spikes at the pit exit, so he would die trying to get out.
Fortunately, outside my base, 7 ambushes occured, and my numerous cage traps caught about 25 goblins, including speargobis, axegobis, bowgobis, and more.
I waited until they were all around the pit's "creature Chute" that I dump stuff into, then tossed them all simultaneously into he pit. Half of them ran as far away as they could from the demented half-demon soldier, who was beheading goblins left and right with his bare hands.
After killing 15 goblins, he had bruised his second right finger and cut his leg. He wasn't even winded.
After being locked up for so long, starving and dehydrated, without decent sleep (the goblins ran from him while he slept) or being able to punish a criminal, he went bersek.
For Armok, I tossed in the last 10 goblins, 2 cougars, and I put my archers behind the fortifications looking in to the pit. All I could see was a cloud of miasma with bolts flying into it, and random limbs and bodies flying out of it.
One goblin jumped off of the platform (the pit had channels between the fortification to collect bolts) and he was smashed by a stonefall trap.
After the miasma cleared, I saw 2 dead cougars, blood and vomit everywhere, and a layer of goblin limbs. In the middle of the pit was Zaneg Thazor, punching bolts away left and right.
I decided that it was enough. I lowered the bridge, opened the door, and let him run straight at my 4 champion axemlords, 20 axemen, and 15 crossbow-dwarves.
After being impaled by 3 bolts, and surrounded by axe and plate-armor equipped soldier, he managed to kill 4 axemen and a random passerby.
I gave him the best tomb in the entire fort.