I found a potential bug:
Level 1, both Green and Grey Goblin treasure rooms. I was able to pick the locks and open the doors of both rooms and the "upset goblin" that watches the door(each type) does not get angry and attack. I'm not complaining, but wanted to let you know.
Viewing post in Unity Underground comments
They did not. I admit I closed the door behind me, but emptied both treasure rooms. I can run a new save, and see what happens with the door open, however I am guessing that without line of sight, they did not realize.
But I did recently attempt to play via GOG and Dosbox, and the doors themselves are owned, so picking the locks would normally aggro the goblins.
I just loaded up the OG game to make sure I wasn't misremembering. I am correct: Picking the lock or breaking the door open in OG is enough to anger the guard.
In Unity Underground, I can take the food from the barrels without the green getting mad, even break open the chest. Taking from the chest angers him.