
Gandal |

Not that i haven't finished this awesome game (i still think it is the best PC game i've ever seen), but i always finish up playing it again thanks to GoG.
Now for the topic :
The quest in the De Arnyse keep is one of the earliest of the game and you get it when you are just above 8-9 lvl (depending on class).
You don't have +3 weapons at that time, nor powerful enough spellcasters, and the golem is only there during the fight to free the keep from the invading trolls, and the quest is on a time limit,if you don't take it as soon as you enter the Copper Coronet Nalia vanishes, as long as i remember and you never get to do the quest,so it is now or never.
Destroying the other golems is a walk in the park, they don't even react when you attack the others in the treasury, so you can kill one,rest,go to the next, rest.....until only the iron one left,and i've never been able to turn it into XP.
I think you cannot even import a lvl 30+ char from another play,since he/she gets stripped naked by Irenicus at the start.
Does it can be killed at the stage of the game you encounter it ?

Gandal |

I never managed to enter that tavern without starting the dialogue with Nalia,so beginning her quest. The first time i played i knew nothing and didn't find the keep in time,just wandered throu the city until Nalia fled saying she was going to find someone else.
After that i always get the quest as soon as i enter the tavern even unwillingly.
But the slaver compound can be accessed form the upper slums too.

KSF |

I always end up using a cheesy tactic.
I have one hasted character run in, grab the treasure, and get chased out the door by the smaller golems. The character runs back to the nearby bedroom, where the other characters are waiting with blunt weapons to beat on the golems.
That's not the cheesy part. The next part is. The big golem is activated when you steal the treasure, just like the others, but it can't make it out the door. So you can run up to it, whack it, run away, repeat, and hang back when it releases an acid cloud. I think Melf's Minute Meteors also works on it. If so, you can also range attack it with your mage while it's stuck in the door.
And as Dragoncat says, Lilacor helps. I think I also usually use a potion of giant strength, if I have one.
It's definitely doable, but it's a pain in the butt.

Slaunyeh |

I always end up using a cheesy tactic.
I have one hasted character run in, grab the treasure, and get chased out the door by the smaller golems. The character runs back to the nearby bedroom, where the other characters are waiting with blunt weapons to beat on the golems.
Oh you can go way cheesier than that, in this part. :) Since the golems only activate if you loot the chests or attack them... you can just calmly murder each of the small golems one at a time.
Also, I think one of the weapons you loot in that room is a +3 axe or a giantbane hammer or something? I vaguely recall that in Korgan's hands it worked wonders to dispatch the big golem.

Drock11 |
I loved the Baldurs Gate games. They are still some of my all time favorites, but one of my few complaints about them is that for many parts you practically need a walkthrough or at least foreknowledge of what is to come, perfect tactics, and knowledge of where to get some items ahead of time that can very easily be missed. Even then after all that there are still fights you need tremendous amounts of luck and save scumming to hope to make it through. Even though I got through everything there were some fights I must have tried over fifty times to get past them, and that was when I was very well prepared for them.
If my memory is serving me correcting that golem was a real pain for me too.

Black Dougal |

I loved the Baldurs Gate games. They are still some of my all time favorites, but one of my few complaints about them is that for many parts you practically need a walkthrough or at least foreknowledge of what is to come, perfect tactics, and knowledge of where to get some items ahead of time that can very easily be missed. Even then after all that there are still fights you need tremendous amounts of luck and save scumming to hope to make it through. Even though I got through everything there were some fights I must have tried over fifty times to get past them, and that was when I was very well prepared for them.
If my memory is serving me correcting that golem was a real pain for me too.
Lilacor is the key..I do also remember giving a flail to Jaheiera (flail of ages)..but Lilacor was the main weapon which took the golem out.

Ultradan |

The De Arnyse keep quest is on a time limit, but it still gives you alot of time.
Before getting to the golem part, leave the keep and travel south to the Watcher's Keep and start doing the first floor of that dungeon. Not long into it, you'll find a Crimson Dart (a +3 returning dart).
Now return to the De Arnyse keep and get the golem to move by stealing the treasure with a character that has a Hast spell on him. As mentionned above, the golem doesn't fit throught the door, so just use the returning dart (which causes a couple of points of damage per round) until the golem dies.
You can also use this technique anytime you encounter one of those golems, as they can mostly be coaxed to block at a doorway or a passagway. (Like when you get near the end of the first floor of Watcher's Keep, or near the end of the Windspear Hills dungeon or inside the giant silver sphere' engine room.)
I know it's cheesy, but it works.