Was have trouble with rusty nuts until i discovered Prismatic flurry,i was using pure fire mage buil for this,so adjust the strategy for trash mobs according to your specific build
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https://www.youtube.com/watch?v=8OjN-9sNQBI
Just to say,this idiot bigmama_88 is a really bad sport,decided to insult me after i said ggwp and offered a little advice to help them be more efficient,hence i'm showing the world what a salty ballsack they are
SHAREfactory™
https://store.playstation.com/#!/en-gb/tid=CUSA00572_00
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https://www.youtube.com/watch?v=RoSIJswxdXg