Thanks for testing and for the feedback. As for the resolution: I agree. The only reason it isn't fixed is simply because I couldn't find how to force Unity to use that resolution or aspect ratio :( Still, the game current dimensions are under the NES resolution, so it may count as "scaled up" (I know that even so, the aspect ratio isn't OK).
The characters don't have AI, but they have individual behaviours. The enemies, for example, respond to aggro. Still, I'd love to read any ideas with the AI. Do you have something in mind?