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- Bronze: 7
- Silver: 4
- Gold: 3
3 Portal Strategy
- Place an orange portal right before the lift and go open the door.
- Place a blue portal slightly left of center where the ball is hitting the wall and go back the where the first portal is.
- Quickly duck inside before getting hit.
- Fire an orange portal at the wall between the button and the door. (Third panel from the wall.)
- Quickly jump onto the button platform from the portal and wait for the ball to enter.
- Exit level.
- Bronze: 1:30
- Silver: 40
- Gold: 30
Gold Time Strategy
- The main trick to completing this in under 30 is to shoot a portal high up on the wall above the button in the long hall rather than waiting for the conveyor.
- Run or portal forward to the conveyor room.
- Shoot a portal high up on the wall above the button then drop through.
- Shoot a blue portal across from the energy pellet.
- Shoot an orange on the wall right above the water then drop through.
- Shoot an orange above the button, go through the blue, then shoot another orange across from the door to the receiver.
- Once the pellet is past the sliding door, drop down and head for the exit.