Loss of Lemmings: Zero
Rope vertically underneath the bottom steel step, to separate off a single Lemming to the right. Make it a Twister, and Fan it down, cutting a step, then right and up at a steep angle. Do this carefully and with patience. If you disturb the twister by going up too steeply, let it come back and click it again. Laser Blast x6 to remove a chunk of the platform above, between the bottom of the slop and the right trap trigger. Rope up to the left, so the Lemming climbs up the rope and up the triangles. Glue the trigger of the top right trap. Use a Twister to cut the original rope and release the horde.