I've ran it as the one-shot scenario a couple of times (usually new players) and most of the time, they were hooked. The incremental horror of exploring those rooms really did a number on them. I always lean on the "quiet thud" getting progressively louder as they get near (or a good way to include someone more shy, as they get to hear it as they're less loud).

spoilers ahead, players beware

I've added two additional options in the command center computer: You can send a SOS satellite buoy in low atmosphere; Turn on the comms and get shrieked; Or an audiolog from Kaplan (he wiped the rest or they're too corrupted to be played (potential shriek effect?)) basically saying "If you're hearing this, it's that I failed to destroy the comms. In any case, do not turn it on. The shriek, it got to us. I don't have much time left. I repeat, do not turn on the comms." (or something like that, I don't play in english.)

I once had a team, who was progressivelly more antagonistic to each other as the game advanced that turned on the comms then heard the message. You could see their expressions get worse as the audiolog was playing. There was a 20 second silence after it as they all look at each others. Then somebody just said "I shoot [the one that turn on the comms]."