The second time I saw a troll I got it to 5% health with arrows. I had full health and a tower shield available and so I decided to save an arrow and take it out with an axe. Fatal mistake. It just smashed me into pulp in a single attack. It gave no fs about my tower shield. That was just the top bun of the viking sandwich it wanted.

Lesson learned. Stick to arrows and running. Yes running is always a good idea with trolls. XD