Part 27

Complete Part 27 of Portal: Revolution, including strategies for saving 99 Lemmings and 46 Lemmings, and using the super-speed device.

Level 067: Use the Force Lem...

1. Lower the release rate to 1.
2. Make the first two Lemmings out of the hatch floaters. They will walk off the sides of the staircases.
3. The next two Lemmings need to dig to the right and left of the metal gates at the pool's edge. This creates a safe fall area and buys time for the floaters.
4. Make the floater walking left a climber. He will turn a switch that closes the gates by the poolside.
5. Have the floater walking right build a single staircase up to the switch directly above the previous one. This opens two horizontal floors for other Lemmings to fall onto.
6. Focus on the climber. He will scale the wall and float down. When he turns the lever, two floors open to the right.
7. Have the climber/floater build a single bridge from the edge to the 8-shaped area where the balloon is, just before falling to his death.
8. Quickly return to the Lemmings who fell through the floor and are walking left.
9. At a release rate of 1, select blockers and place your cursor to their left. Click until the frontman becomes a blocker. Do not let any Lemmings pass this blocker.
10. The rest will turn around and head to the figure-8 area with the balloon. They will walk up stairs, across the bridge, and hit a wall.
11. Raise the release rate to 99 and speed up the level until 99 Lemmings are in the balloon.

Level 068: Scale that wall....

1. Lower the release rate to 1.
2. Wait for the second Lemming. When under the bottom of the two portals, make him a blocker.
3. Have the Lemming in front build to the steel wall ahead when at the edge of the pool.
4. As the Water Lemming backtracks, make him build up to the portal so he enters from the right and exits the left.
5. Have him build to the small steel block when he exits the portal and falls to the ledge. This turns him around and activates a lever, opening the large steel door to the left of the entrance.
6. Go to that entrance and place a blocker near it, allowing two Lemmings past.
7. When the frontman of the two touches the anti-gravity field and walks on the ceiling, make him a blocker. The other will head towards a plummet.
8. Near the edge of the ceiling, build to the right to reach a switch that opens the gate above.
9. Make the very first Water Lemming (who is still moving back and forth) a climber + floater.
10. He will walk to his first bridge, climb the steel wall, and then build to the switch on the floating metal platform below.
11. This activates a device to the right that gives temporary super-speed.
12. Use this super-speed gadget to get up the wall before the weasel knocks you off. Bash while building to save time.
13. The next part requires luck and timing. The Lemming may enter the super-speed device and make it up the wall.