Enclave level #13 light campaign

[MerimacHamwich]

My god! I cannot beat this level! I get a little further each time but it is frustrating as hell having to go through everything again. So far I can make it the farthest as the Knight or Wizard. Can anyone help me out on this level? I found out where the first 2 keys are but I only live long enough to get the first key. Those stupid witches with that spell that takes off 15 health per second kill me. Is there any special way t go about beating this level? Is there a better character to use for it?

[MerimacHamwich]

Well I beat it. I just played as the Wizard and kicked some booty. The next level is even harder. This game is insane.