There is a portion of the scenario involving the tracking down of a prominent figure, Besel Ardoc. In order to find him, the PC's must track down several clues as to his whereabouts with several Diplomacy or Knowledge: Local checks. The party makeup, a level 1 magus, level 4 witch, and two level 1 fighters, were rather ill-equipped to deal with the necessary skills. When they finally did get a few clues, one of which being Ardoc's workplace The Kiln, they decided to head there to see if they can get a hold of him.
The scenario states that the human entrance guards had the assistance of several CR 13 Iron Golems in order to dissuade the PC's from barging in. Naturally, the PC's tried fitfully to talk and bribe them into allow entrance to see Ardoc. The guards refuse and even get belligerent with the PC's, as was written. They eventually decide to walk away and come up with another plan.
Now, I had originally described The Kiln (as I had not found any other description) as a small factory-like building with 25 foot walls around it to keep out anyone nosey enough to try to get in. This did not discourage the PC's, two of whom decide to scale the wall with a grappling hook and rope. They succeed getting it up there, latch it on, then start to climb up, at which point (because they emphasize that Besel has many guardians to protect him and his interests) they encounter an Iron Golem at the top of the wall. The golem grabs the grappling hook and simply lets go so the pair fall to the ground. I figured that this might be enough to get them looking elsewhere for Ardoc.
That's when the magus decided to fire an Acid Splash at the golem. While not new to Pathfinder, he didn't really understand just how powerful these constructs were. I had the golem leap down to the street and glare menacingly at the pair. The Fighter shot a bow at it and the magus tried another Acid Splash. I figured, after such blatant hostility, that the golem would attack. He smeared the magus with a 33 damage hit. The fighter ran off to tell the rest of the group of the magus' untimely demise.