Most enemies can still sort of tell where you are for a few seconds after casting invisibility, and quiet casting let's you go from assassination to assassination before you're even caught :D however, this class is weak against dragons, in my experience. They pretty much never just sit on the ground in a back stabbable position and are immune to calm spells...

exactly! and you can easily spice it up with a few strategically placed frenzy runes, and watch the carnage unfold  

Assassin with illusion on the side, my absolute favourite way to play and, when done right, you can avoid pretty much all damage by not being seen and do colossal damage with 15x dagger sneak attacks  plus, turning invisible with a single spell at any time makes you practically untouchable :) what's not to love? :)

I think gopher is great too! I just assumed that grumpy duckling wanted a vanilla let's play 

CerialAssassin4 on youtube - traditional dagger and bow assassin TrendKiLLV01 on youtube - archer assassin using the bound bow Hope this helped!