The rocks that can only be destroyed with TNT should not be targetable and behave like another part of the landscape except for the TNT part. It is really frustrating to try to move stealthily around rocks and accidentally click on a part of it and fire off a shot and become the target of the burrowers in the gauntlet room. Also electrokinesis becomes almost useless in the proximity of rocks because they become target for the electrical bolt and absorbs it.
