Interesting progression, I must say, the Vein Cracker augment turned it into a completely different type of game immediately haha.
I think what the game could really benefit from is more feedback to the player. Some sound effects for unlocking new augments, or activating them (I could not tell if any speed increases were actually applying or not), and most importantly to help understand which rocks are more dense and whatnot.
Still had a nice little time with this one