I think its clear for any of you min/max RPG vets and D&D vets. Once you know what you're doing its really pathetically easy. Most of the goblin camp dies to a single hit, and thats before we have any huge AOEs.
Stuff needs more HP, more enemy healers, more challenge.
I think as right now it's ok for a normal difficulty.
Higher difficulties should get more challenginf than what we have at the moment, but it could be easier for the easy and very easy.
