Opera House exit

[JampactJ]

Upon disposing of Bartoli & Co.,then returning to the storeroom,I have not been able to find an exit from the room.I could hear the plane while I was in Bartoli's death chamber,but again there was no evidence of a switch or lever here either.HELP!!!!

[tlr online]

Walk down the right side of the room (looking down from your room entry point before killing Bartolli and you will see a door. Through that, down the ramp, and onto the plane.

[KT926]

At the other side of the room to where you came in, there is a block to the left that you are able to climb on (at the end of the second isle from the left wall).

Climb the crates to the other side and there is a switch on a large block to the right of where you came in. This opens the door where you can go to the plane and exit the level.