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Splinter Cell: Chaos Theory Hints
How can I get into the upstairs room with the unopenable door?
1 of 8: If you're referring to the door that has no keycode panel, then forget about opening that door -- it's barricaded from the other side.
2 of 8: You'll need to find a sneaky way to enter that room that its occupants might not have thought to block.
3 of 8: It so happens that there's a vent shaft connecting that room to the one next door to it.
4 of 8: The one next door is the locked private office.
5 of 8: In the back corner of the office is a crawl space you can enter that will get you into the barricaded room.
6 of 8: Drop down and wait in the darkness until both of the I-SDF guys are seated.
7 of 8: It's then easy to complete your secondary objective by grabbing and interrogating either one of the guys or by using the EEV on either one of the computers.
8 of 8: To leave, go back through the crawl space you used to enter.