How to play a mage?

[tt1]

I am currently trying to defeat Diablo in normal difficult. Can somebody please explain to me how to defeat the 4 pre-bosses?

btw I like hard games but this is jsut ridiculous. One hit of the one boss and I am stunned until I die. No chance to cast a spell or to run away or to do anything.
Is this difficult in your oppinion? To me this is NOT difficult. It is a completely stupid design which doesnt make sense at all.

[Miacis]

Diablo is easy breezy in normal difficulty for a sorcerer especially in Belzebub; you are just not using this class at its full power and there is no stupid design involved in that particular fight. You'll see one in Hell difficulty, but not before.

To be more on-topic, I'll leave this video made by jangnanggureogi here: https://youtu.be/OSHiFPDzWL8

THIS is how you play mage.