Uhm. This is really really rough. The 2d + 3d mix is interesting, but really incoherent. Mechanics need a lot polishing.
The setting is a bit confusing. I'm not really understanding what kind of world you created.
I liked the digging mechanic. Maybe arrows are not the perfect weapon to dig. What about a gun or something more... explosive?
However I think this could be a interesting point to work on, because it's pretty unique.