Hey there. Really promising game so far!
Just a comment on the controls: unless the mouse is really necessary (doesn't seem like it at this point) don't use wasd and its adjacent keys, because it's really awkward to control the game with only my left hand. It makes sense to use wasd and E, F, Q etc when the right hand is on the mouse but not here. Instead use arrow keys and any sequence of keys from Z to C and the row above. This is my suggestion, at least.