: Sounds like it could be fun. It's like a puzzle out of the Stanley Parable,
: except this is the real deal instead of a parody. Maybe one such door
: could be a trap where Marcus/SO gets locked in Durandal's own Serious Room
: for goofing off when he's supposed to be helping him. It would be the only
: one of its kind however so as not to annoy the player or discourage them
: from trying this.
I'm thinking with the open world design model you'll gradually unlock and gain access to different part of the ship while following the main story. And there will be scripted events which take place as you progress that may or may not be in areas of the ship you have access to. But once you do figure out how to access those areas you can reload a previous save from earlier in the game you can unlock that part of the ship. Perfect example: Durandal sends you to find Bernard Strauss, and like in the original game, you never do or discover he's dead. BUT if you reload a previous save when he was still alive and gain access to that area you can "save" him, or maybe get information from him. I'm imagining this is stuff the game never explicitly instructs you to do, It's something you have to do on your own volition and through piecing together clues from terminals. Also perhaps if you start breaking into parts of the ship you're not supposed to be there might be security countermeasures you have to deal with in addition to the Pfhor.