There's a passage in the ceiling. The fact that you went through all that to get to that red beam is the best indicator that the beam is a false dead end.
Also, if you can survive long enough down there, there's an e-tank right before the next key item. And there was an e-tank before that acidrise room in the stairway room as well to get you to full. When in doubt, keep a savestate from before the acidrise room and redo it if you find you need more energy to get through the coming rooms.
Also, if you can survive long enough down there, there's an e-tank right before the next key item. And there was an e-tank before that acidrise room in the stairway room as well to get you to full. When in doubt, keep a savestate from before the acidrise room and redo it if you find you need more energy to get through the coming rooms.