Things in the Game: Wall
Rich cannot walk through walls.
Well, to be more accurate, Rich cannot walk through most walls. However, some walls are either dissolving walls (which automatically disappear after 3 or 12 turns), and some may be break-walls (which disappear after being bumped, stabbed, crushed, or exploded 3 times). For the dissolving walls, Rich can speed up the process by bumping into these walls.