Pretty cool, I'm impressed by the solid frame rate considering the objects. The character doesn't really seem to need 8 walking directions, 4 direction sprites would look better given the narrowness of corridors, but I'm sure none of the art is final. Very cool and very curious about your procedural generation with rooms!
As for A.I. I think clever spawning may serve you better than good path finding but if you are curious about A.I. google Tiny keep and what they are doing with it