Loss of Lemmings: Zero
Move the cannon fully to the right. Jump a Lemming out to it. Let it be shot, reflect, and drop to the middle level. Jump in the direction indicated by the yellow arrow. Make it a Climber. When it gets halfway along the red arrow (walking right on the bottom platform), just where the platfrom changes from green to yellow, make it Laser Blast. Glue just before the end of the platform. Jump another Lemming out of the horde, and make it follow the same route. Jump over the hole made by the previous laser blast. Laser Blast just before it reaches the green blocks and reflects, and the overlap should release the horde.