Morbid as it may be, we need to find a guard's hand to get the cell open.
Most of the aliens we've seen so far have burst when killed - see if you can find a corpse that's a bit more than a blue stain.
The legs in the lunch room seem to imply that there's more corpse to see nearby.
Look up - there's a hand stuck to the ceiling.
The hand is firmly stuck to that blue stuff - try looking for something that could peel or scrape it off the roof.
A spatula might do the trick, but the kitchen is locked firmly shut.
The geology lab is right next to the kitchen - maybe there's a door to the kitchen inside?
That's never stopped us before.
The air duct! It may seem secure, but the other ones did too.
Use your wrench to loosen the bolts.
A chef robot with a spatula!
After speaking to him, it seems he won't help us unless we have an authorization code.
Headquarters may have tried to kill us earlier, but the Admiral might help if we ask nicely.
Try calling him up in the conference room to get the code out of him.
The Admiral's main goal is, apparently, to make us surrender. That should be your main bargaining tool.
Offer to surrender in exchange for food; you'll get the ? (SpatulaB)
If the option to say 'we want something to eat' isn't available, make sure you've spoken to the chef robot.
chef authorization code!