Dragon Age: Origins
76 Achievements
1,750
75-104h
Varterral's Fall
Defeated the varterral on Hard or Nightmare difficulty
25
How to unlock the Varterral's Fall achievement in Dragon Age: Origins - Definitive Guide
Basially all you need to do is set Finn's tactics to 'Ranged' and set him so he casts 'Heal All' when an ally's health reaches 75% (the default is 50) when you do that he stays near the entrance to the area and never gets hit.
Once that is done your party should move in a start attacking, when the Dragon's spawn take them out yourself and your party should keep attacking the Varterral, once the Dragons are gone switch back and you should take it out no problem.
Using this method with a level 32 Warrior I took it out in about 3 minutes without any of my party ever coming close to dying.
The Varterral fight is actually pretty easy on hard as long as you have a high level character. Hybridchld's method is good, so there's no need to repeat it.
Here's a good video showing the fight.
The Varterral is at the end of the Dragonbone Wastes. If you’re concerned because of how difficult the Harvester was on Hard, don’t worry. This thing is much, much easier. Again, switch the difficulty to Hard or Nightmare right before you get to the boss fight (it’ll be right after an autosave point before a huge clearing). Have Finn set to heal everyone in your party. You, Dog, and Ariane hammer away at the Varterral. When the Varterral summons Dragons (which will happen two times), have Ariane go after them. Keep hammering away with Dog. The Varterrel is more annoying in some ways than the Harvester because it heals itself and jumps around a lot. Other than that, it’s a cakewalk.
The Varterral is at the end of the Dragonbone Wastes. If you’re concerned because of how difficult the Harvester was on Hard, don’t worry. This thing is much, much easier. Again, switch the difficulty to Hard or Nightmare right before you get to the boss fight (it’ll be right after an autosave point before a huge clearing). Have Finn set to heal everyone in your party. You, Dog, and Ariane hammer away at the Varterral. When the Varterral summons Dragons (which will happen two times), have Ariane go after them. Keep hammering away with Dog. The Varterrel is more annoying in some ways than the Harvester because it heals itself and jumps around a lot. Other than that, it’s a cakewalk.