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Portal 2 Hints
How can I open the exit door?
1 of 15: Now that the cube is weighting down the big red button, you can use the gel-covered ramp to run up to the exit door's area. (Note that you may need to splatter some more propulsion gel onto the floor near the ramp if there isn't much there.)
2 of 15: Notice the blue dots that lead from the exit door to a high-up button pedestal.
3 of 15: The floor section at the bottom of the pedestal's shaft is portal-friendly, thereby strongly implying that you need to portal-fling yourself up to where you can hit the pedestal's button.
4 of 15: However, there's no way to set up portals for a standard portal-flinging maneuver. You'll need to think of something else.
5 of 15: How might you use propulsion gel to simulate a portal fling?
6 of 15: Since propulsion gel speeds you up as you run along it, you could use a long gel run instead of a long drop to gain the needed momentum.
7 of 15: Put an orange portal on the floor underneath the button pedestal, then put a blue portal anywhere in the chamber's starting area so you can return to it.
8 of 15: Look around and think about how you can set up a nice, long propulsion gel run that'll end in you going through a portal with lots of momentum.
9 of 15: The best way is to splatter propulsion gel all over the floor between the ramp and the portal-friendly wall section that's directly across from it.
10 of 15: Portal your way back onto the button pedestal's ledge, then use portals like you did before to get the gel spread. Note that you'll have to put the blue portal on the wall section to get the floor next to it gel-covered.
11 of 15: Leave the blue portal on that wall section, and use the ramp to return to the exit door's area.
12 of 15: Put an orange portal on the flooring under the button pedestal, then go through it to return to the starting area.
13 of 15: Go over to the base of the ramp, then turn to face the blue portal.
14 of 15: Run toward it and then through it, ready to hit the pedestal's button when you shoot up out of the orange portal.
15 of 15: Pressing that button will open the exit door. Thankfully, there's no timer on it, so you can take your time getting to the door.
