Those numbers you see when you destroy a computer node on a level? Take a note of those, it’ll save you time later.
There’s no harm in moving unknown items closer to lifts if you have inventory space, they’re probably plot items and you’ll save yourself some time
You can look at items in the main viewscreen, including the decapitated heads lying around. There’s one head in particular on level 3 you’ll need to grab later on, luckily that person has left you some logs to help identify them…
Levels 8 and 9 do not have a cyborg conversion chamber. Good thing you got all those medkits, IL-CAD batteries and level 3 shield, right?