I recently felt like playing Amnesia again, so I loaded it up. Had to download quite a bit of new data, though, so I wasn't surprised when the loading screen had new options - namely a button labelled Justine.
As it turns out, Justine is a new level. I don't know who the protagonist is (though I have an idea), but you wake up in a cell and off you go to make your way through a series of trials. Unfortunately there's some evil corpse creature trying to murder you, and there's some Gramaphones you can activate to hear recordings that indicate this is all a purposeful trial for you.
Without any further ado, this is my first attempt at it. Please note: I failed. For maximum immersion, play in a dark room with headphones.