Which Way Do We Go? is the 2nd level of the Mayhem difficulty from the demo disk included with the Lemmings: The Official Companion strategy guide book.
Strategy[]
Make the first Lemming a Digger when he reaches the rocks, and build about halfway down. One should get out: if not, make a right-facing Climber to become your Trailblazer. Have him build over the two Vine Traps. Dig to shave the right edge off the top rock, then be prepared to build three times toward the large landmass. After landing there, mine through it. When the tunnel is finished near the bottom, build another three times to reach the final stretch. Build once more over another Vine Trap near the Exit portal, bashing to cut short if necessary. Make another right-facing basher in the holding pit to free the rest.