Some Feedback:
Mining: There is little to no feedback when it comes to mining, a good rule of thumb would be stuff like a drill animation, drill sfx, some screenshakes, and particles, as it's hard to sometimes say if you are even doing anything.
Combat: The fance seams to only damage enemies on entering, which is kind of wired why isn't it a reapeating trigger for everything in range. Also a ranged option or any other way of preventing damage on player would be great as this is pretty much trading blows with the enemies.