Trolls are extremely dangerous and should only be approached once you're certain you can kill one. They have a huge attack range so if in doubt its best to stay far from one unless examining from in water. In order to be absolutely sure you can kill a troll, make sure you have at least 60 fighting skill and some good studded armour. A lucky troll can best even the most seasoned fighters, so also make sure to bring lots of healing items. It is highly recommended to ride a horse when fighting them. Without a horse, it is a good idea to lead the troll near water so you can easily retreat if needed. Trolls can give a deadly mauling wound which tops up over 50 damage. This sort of wound should be healed '''immediately!'''
When in the 30-40 fighting skill range, these creatures are the best to train on with a group of three or more.