Part 23

Start on the left side of the level. Click your blocker icon and make the second Lemming out of the hatch. The first Lemming will pass by and turn a switch, activating the two side floors below the thin ledge where the middle Lemmings reside.

When the single Lemming reaches the edge of the thin ledge, have him build. He should hit the wall but leave a gap to drop onto the steel boundary of the water tank and into a safe alcove.

When he hits his head and turns around, focus on the right end of the level. You will have Lemmings wandering into the water; this is fine, except for the last one. Have this Lemming build at the edge of the thin ledge above the pool.

This side is misaligned, so when he reaches the steel wall and turns around, have him dig through it when he gets back to the top of his bridge to survive. You now have one Lemming in the alcove on the bottom of each side.

Start with the Lemming on the left, then have the one on the right mimic his actions.

Go to the middle section and have a Lemming dig on either side of the thin ledge above one of the metal side floors. Raise their release rate to 99.

Have the Lemming on the left build a bridge under the second rivet from the right to reach the ]-shaped enclosure. Do the same for the Lemming on the right, but reverse the direction (build up to the left when under the second rivet from the left).

On the left side, bash through the wall. As soon as he sees light, have him build. This single bridge will elevate him to the swirly gravity doodad. He will walk through a laser gate, removing a floor below the middle Lemmings, then move to another, landing him back on the ground to walk left into the alcove. Repeat these steps on the right side.

When the Lemming on the left returns to the gravity pad, have him dig where the bridge meets the ledge, just above an L-shaped piece of land. Quickly have him build upon touching the ground to prevent him from falling. Do the same for the other Lemming.

Each Lemming will now enter a portal, leading them to the top of the opposite side of the level. Ignore the Lemming now on the left; he will turn his switch and act independently. Focus on the Lemming now on the right.

The Lemming on the right will exit the portal and drop to a ledge below. Have him mine through it as he walks right. To cover (press the cover button to crouch behind walls or objects) other Lemmings heading this way, build up to the wall when you reach the right end of the long plateau.

On his way back left, the Lemming will encounter another anti-gravity vortex. Let him hit it, then watch him walk to the switch. He will hit it, releasing all middle Lemmings to the balloon as their floors are gone.

Bomb the blocker on the left side at the beginning of the level. Lemmings will start coming your way. The next time the trailblazer Lemming reaches the gravity pad sending him to the ceiling, have him build over it. He will then walk into the hole below with thin ground. Do not dig through it until all other Lemmings are inside.

When everyone is in the small space, have someone dig. They will go to the balloon, and you will finish the stage with little time left. If time permits, find the last lone Lemming and nuke him. Otherwise, let the clock expire.