I don't think there is much of a challenge or strategy needed for this game. Mainly just one big grind. I'm not gonna bash on the game too much. Looks like a lot of effort went into it. It's very charming with the 8 bit style and music. I love the story, and the little tid-bits of info the library. I spent a solid 4 hours just whipping monsters, there was something hypnotic about it. All in all the game made me feel like a financial advisor to the overlord instead of the overlord himself. You should make the campaign mode require a little more strategy to it instead of constantly clicking just on kind of monster until it was finished. I hope I was slightly helpful. I think you got something here just needs some tweaking. Look forward to more of your work.