So the guy was probably a Syreen male ("his skin hue is definitely blue", "he is quite... rare" and "very handsome"), not a sick human. Hmm, it seems each door has a different species, but there are only 12 doors and there were 14 races in Star Control 1. I wonder which races are missing, I suppose one of them may be the Arilou (hard to catch). Likely candidates for the other are Androsynth (cloned Humans, thus redundant), Mmrnmhrm (just robots), Ur-Quan (if they are the ones who run this thing). Or maybe the Mmrnmhrm and Chenjesu are missing, because they don't have a carbon-based biology. We'll see.
Yeah, let's try the keycard on room 11, and if that doesn't work, let's go through each locked door in turn and see which one is opened by the keycard. Let's even try the identity card, if it even fits.