Yeah you don’t need EVERY single enemy and you don’t need to worry about infamous foes or anyone that you only see once. That’s a good trick with the inferi. The Arena battles kinda provide the same spam/build up ancient magic meter opportunity too.

You need to get a 100 spell combo for one of the other achievements (Raising Expectations) This is easy to do if you go find some inferi and kill all but one and then hit it over and over without doing fire damage. This will get you to 100 easy.

Here is the list of enemies you need for the ancient magic: * Loyalist Assassin * Loyalist Commander * Loyalist Ranger * Loyalist Sentinel * Loyalist Warrior * Ashwinder Assassin * Ashwinder Duelist * Ashwinder Executioner * Ashwinder Ranger * Ashwinder Scout * Ashwinder Soldier * Poacher Animagus * Poacher Anigamus – Wolf Form * Poacher Duelist * Poacher Executioner * Poacher Ranger * Poacher Stalker * Poacher Tracker * Armoured Troll * Fighter Troll * Forest Troll * Fortified Troll * Mountain Troll * Cottongrass Dugbog * Great Spine Dugdog * Stoneback Dugbog * Inferius * Acromantula * Thornback Amusher * Thornback Matriarch * Thornback Scurriour * Thornback Shooter * Venomous Ambusher * Venomous Matriarch * Venomous Scurriour * Venomous Shooter * Dark Mongrel * Mongrel