I am stuck at the main facility, I don't know what to do! Almost all rooms are locked, the few unlocked ones contain nothing, the suggestion in the inventory menu is awfully vague ("Find a way to escape NOW!", what does it even mean?), the clues in the notes are useless (I know there are things hidden in the vents, but... I can see NO VENTS around!!), I hear something walking near me but I see nothing, and, above all, I can't find even a single keycard around! What am I doing wrong?...

How am I supposed to use them for platforming? It is physically impossible!