Lab Airlock

Defeat the Alpha Series near the restrooms with a well-placed Heat-Seeking Rocket or two, and continue south through the sterilized corridor of the Lab Airlock area. Throw the lever inside the airlock and head out onto the seafloor.

Continue south along the seafloor to the hole in the ground and drop through the hole to the Alpha Series corpse below. Climb the lengthy stairwell beside the corpse to find an ADAM Slug, then return the way you came and continue east, past the OxyFill Station Sinclair mentions, and into the airlock.

Find and Activate the Circuit Breakers Power is currently cut in the main section of the Plasmid Laboratory. Find and activate the circuit breakers that are hidden with the darkness. Once this is done, Gil can give you further instructions on how to deal with him.