Loss of Lemmings: Zero
As soon as the first Lemming lands, Rope to the island on the left. Start a Runner. Build from the top of this island to the next one. Build right with a Lemming stadning on the right cannon control arrow. Mine left from just right of the penguin. Build x2 left from two thirds of the way up the slope to the right of the penguin. When the miner finishes, Build again to complete the ramp started at the cannon control arrow. Fly a Super Lemming from the right hand side of the scrren up and onto the top island. Jump it left onto the steel, then make it a Super Lemming again and fly it round to the left of the exit. Immediately after it reflects at the left side of the screen, make it Mine right. When the miner breaks through and the horde clambers up, let one reflect then Build right from the top of the mineshaft to get to the exit.