So, as per usual in the other versions, they started friendly to me. There were 3 towers of them so I quickly manage to collapse one tower, hoping that this will lead them to become hostile towards me for much FUN, but that didn't work.
After reading the wiki, I saw that they become hostile to you after the first goblin seige. So, I trained my military, waiting, until finally an ambush arives. I had already trapped the entrances to one of the two remaining towers, so I immediatly captured 7-8 goblins. I activated my millitary, and sent them to deal with the large population of goblins, with I thought would now be aligned against me.
Unfortunatly, they were still friendly to me. However, later I received a message "goblin spearman is no longer enraged!". I found where this goblin was, and couldn't belive it. It seemed as though the goblin invasion had attacked the other tower, where I did not trap, and managed to slaughter almost everyone inside, including the demon who lead the civilisation. What was more strange was other goblins, not involved in the invader/second goblin tower, were fighting each other! I now have many, many rotting goblins (and one demon corpse) in both the towers, and almost all other goblins have injuries.
Has anyone else had a problem with natural goblins going mad during seiges?
some pictures of the devastion.
http://tinypic.com/r/243kefl/6This one is of a fight ongoing, with the two goblin children beating up a goblin stoneworker
http://tinypic.com/r/1124pj7/6This is the top of the untrapped tower, where it looks like almost everyone was killed. The demon master's corpse is near the top left.