Light Speed

The Light Speed achievement is a puzzle located in Portalforge Lab on Sandswept Isles. The lab is essentially a small chamber with raised platforms at each compass point. In the center is a cannon that creates portals: an exit portal placed by red cannon controls and an entrance portal placed by blue cannon controls. On each platform is a set of Door Controls and one or two cannon controls. To earn the achievement, players must interact with all four Door Controls within 35 seconds of each other.

The game tracks portals, controls and the portal cannon separately for each player, so players cannot interfere with each other's progress except to drag Branded minions up from the floor onto the starting platform.

Achievement

Light Speed	A Bug in the System	1
Activate the 4 door controls in the Invariant Enclave Lab in under 35 seconds.Engage in a test of intellect developed by the Inquest.	Sped Through the Portal Puzzle in the Invariant Enclave Lab	1

Walkthrough

This solution sets things up to start the timer on the northern platform (steps 1-10), to take advantage of the starting platform's Red (Turn Twice & Shoot) button. This is done to minimize the number of actions needed after activating the first door control (step 11) which starts the timer. This allows for a fairly generous time buffer to get the achievement.

1. Enter the chamber and climb up the western platform. Ignore the Door Control on this platform for the time being - timing starts when you touch the first door control.

2. Press the red (Turn Twice; Shoot) button. This will create an exit portal on the eastern platform.

3. Press the blue (Reset Entrance Portal) button to place the portal entrance on your platform. Enter the portal. You are now on the eastern platform.

4. Ignore the door control and press the blue (Turn Once; Shoot) button three times. This will move the entrance portal to the southern platform, where you can't reach it.

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5. Run back to the starting platform. (Ignore the door control.)

6. Press the red (Turn Twice; Shoot) button. This will create an exit portal on the northern platform.

7. Press the blue (Reset Entrance Portal) button to place the portal entrance on your platform. Enter the portal. You are now on the northern platform.

8. Press the grey (Turn Once) button so that the turret is aiming at the northern platform.

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9. Interact with the Door Control which will start the timer.

10. Run back to the starting platform and press the red (Turn Twice; Shoot) button.

11. Interact with the Door Control and enter the portal. You are now on the southern platform.

12. Interact with the Door Control.

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13. Press the grey (Turn Once) button so that the turret is aiming at the western platform.

14. Run back to the starting platform.

15. Press the red (Turn Twice; Shoot) button. This will create an exit portal on the eastern platform. Enter the portal. You are now on the eastern platform.

16. Interact with the final Door Control to solve the puzzle.

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Notes

Bug:

Occasionally, the cannon doesn't fire when it is supposed to or the player may see the exit appear at the new location, but still end up at the old position.

Bug:

Occasionally If Door Control does not show up after last portal, run back to first platform and portal again.

• Players can earn this achievement while in story mode during The Road to Rata Primus or any time thereafter.
  • It can be earned in open world.
• If failed, the puzzle can be reset by logging out and back in.
  • If you log out on the last platform, you can cut it off the end of the procedure, speeding things up.

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Sandswept Isles