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Portal 2 Hints
How can I get over to the exit door without closing it?
1 of 4: You can't, but you can reopen it once you're back on its side of the chamber.
2 of 4: Drop the redirection cube so that it keeps redirecting the laser beam into the exit door's receptacle, then drop down to the button pedestal's ledge.
3 of 4: Move the orange portal to the ledge's portal-friendly wall, then go through it to drop down on the other side of the chamber.
4 of 4: Put the orange portal back on the wall where the laser beam hits it to reopen the exit door, then go through it.
