I think the concept is solid, but the execution flopped. I'd recommend removing or significantly shortening the turn delay, since trekking through empty areas feels so tedious when limited to moving one space per second. I also felt that the combat lacked substance; it felt like the best way to defeat enemies, if there even is a reason to do so, is to just stand still and wait for them to enter attacking range before pressing space.
I think this can be something good, but it needs work.