*Sigh* I was hoping to keep it a secret, conservation of detail and everything. Dark Matter isn't standing at the door. He rigged up a humanoid looking thing using stuff he found and is trying to hide the fact that it's not him by hiding it in the light; if Jack goes towards the entrance from the ground floor the light would be too bright to notice that the dark silhouette isn't a person, just a pile of junk in the shape of a person. Dark Matter did this because before he entered he heard jack shoot his gun inside the warehouse. Didn't exactly give Dark Matter much reasonable inclination to be standing in the doorway of a possibly irate gunman. So if Jack does decide to start the parley by opening fire, Dark Matter can safely conclude from his hiding spot that perhaps Jack won't be a reasonable business partner and split.
Now where Dark Matter is, I won't say. Only that he's close enough to yell at you from the entrance of the warehouse.
Now where Dark Matter is, I won't say. Only that he's close enough to yell at you from the entrance of the warehouse.