I'm sorry it took so long to get back to you. I've been busy working on a new character build. I did my research and here's what I came up with. Ash Spawns have fire resistance so your best bet is to kill them with lightning spells. Seekers on the other hand have shock resistance so fire should do well. Lurkers are tricky. They have magic and poison resistance. Despite this you could use Orchedor's Blight to weaken them and attack with either fire or shock magic. Werewolves and werebears don't have a particular weakness to magic. However, if you're willing to add some new perks to the character, you should spend points in the frost path of the destruction tree. The character caps at level 37 so there's plenty of room to add new stuff. Why frost, you might ask? Frost spells damage stamina and slow npcs down. Since werewolves need to be in melee range to attack, simply some distance between you and them then constantly hit them with ice storm.
I'm sorry it took so long to get back to you. I've been busy working on a new character build. I did my research and here's what I came up with. Ash Spawns have fire resistance so your best bet is to kill them with lightning spells. Seekers on the other hand have shock resistance so fire should do well. Lurkers are tricky. They have magic and poison resistance. Despite this you could use Orchedor's Blight to weaken them and attack with either fire or shock magic. Werewolves and werebears don't have a particular weakness to magic. However, if you're willing to add some new perks to the character, you should spend points in the frost path of the destruction tree. The character caps at level 37 so there's plenty of room to add new stuff. Why frost, you might ask? Frost spells damage stamina and slow npcs down. Since werewolves need to be in melee range to attack, simply some distance between you and them then constantly hit them with ice storm.