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Part 20
Portal: Revolution

Part 20

Complete walkthrough for Part 20 of Portal: Revolution, covering Bamboo Maze (053) and Can't Get There From Here (054) levels. Save all 50 Lemmings!

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Complete walkthrough for Part 20 of Portal: Revolution, covering Bamboo Maze (053) and Can't Get There From Here (054) levels. Save all 50 Lemmings!

Walkthrough
  1. 1
    Initial Section: Detonate a blocker precisely when a weasel is over the fourth rivet to the right of the switch while it walks left. This allows a single Lemming to pass through a temporarily open wall and activate a speed machine.
  2. 2
    Weasel Management: Use a previously dug hole to make the weasel fall through a tunnel instead of triggering a laser. This permanently opens a long wall at the top.
  3. 3
    Escaping Blockers: Bomb another blocker at the top to allow Lemmings to escape. For Lemmings moving between portals, have them build up and then bash through a wall. Nuke any remaining blockers.
  4. 4
    053. Bamboo Maze: Save 48 out of 50 Lemmings within 5:00.
  5. 5
    Let one Lemming go past the '03' counter and set up a blocker on the metal floor.
  6. 6
    The lone Lemming needs to dig twice, then bash left four times to get outside the maze.
  7. 7
    Dig again upon hitting the ground, then bash right through a wall.
  8. 8
    Dig once more, then let the Lemming walk to turn a switch, which opens an important door.
  9. 9
    Turn the level to see the Lemming exit a portal on the left. Let him walk left, then dig twice.
  10. 10
    Dig again below, to the right of the previous hole and left of a thin door.
  11. 11
    Have the Lemming bash left into the door, then dig down near the right wall of the chamber with the '02' counter.
  12. 12
    Make this Lemming a climber to scale the wall and return to the previous floor, enabling him to reach the exit.
  13. 13
    This Lemming will walk left, making the counter tick to '01', then pass back through, shutting the door on '00' and leaving him in the switch room.
  14. 14
    Turning the switch drops the floor at the start, freeing a blocker, and opens the thin door to the balloon.
  15. 15
    Have the lone Lemming climb to the balloon.
  16. 16
    For the remaining Lemmings, have one dig them out of their chamber. They will then follow the path of the first Lemming to the exit. Speed up the process.
  17. 17
    054. Can't Get There From Here: Save 49 out of 50 Lemmings within 6:00.
  18. 18
    Lemmings start on a large T-shaped landmass. Dig in the middle and make the digger a climber.
  19. 19
    Make the next Lemming to fall into the hole a climber that goes left. Ignore him briefly.
  20. 20
    Wait for the first digger to get low enough for others to bash left onto a steel overhang. Have the digger build, run into the wall, and turn left. Raise the release rate to 99.
  21. 21
    Focus on the other climber near a steel wall. When over it, have him dig. The other Lemming will climb out of this hole.
  22. 22
    When the second Lemming goes up the next steel wall, falls, and turns right, have him dig.
  23. 23
    The first climber should reach the bottom; have him bash left.
  24. 24
    The Lemming digging facing right should finish his hole as the basher comes through. Make him bash right into the steel.
  25. 25
    When the first climber heads up the wall towards the balloon area, prepare the bomber. Start his timer when he reaches the large landmass.
Tips
  • Precise timing of blocker detonation is crucial for Lemming passage.
  • Utilize digging and bashing skills effectively to create paths and trigger switches.
  • The switch in Bamboo Maze is vital for opening the path to the balloon and freeing other Lemmings.
  • In Can't Get There From Here, managing multiple climbers and diggers simultaneously requires attention to detail and quick actions.

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