A creepy thing you missed - a survivor
At the end in the engine room they crawl up and then up again because the flames are blocking their way. The old Jew has just left his dead fat-wife and is seen following them up in the next scene. Right behind him we see a hurt man move his arm up to his face. It's not a small movement, and it seems like he is wiping his face.
So, that man must not have been able to either hear them or contact them. If he is hearing them it must be hell not being able to even speak and tell them to take you with them! If he can't hear them he must have lost his hearing. He can only move his arms and head and has broken his spine either way. It could also be that he has just awaken by their noise... but why does he not follow them then up then or scream?
At the end the helicopter rescuers ask them if there are any other survivors. And they tell him there are no other men down there. Then we see the helicopter fly away. Was that the only helicopter? If no, then why didn't they check everything before it is to late? If they weren't there the rescuers would go down to look for survivors and would have found him. Were there responsible for his death? IRL the rescuers would off cause search everything. But in this movie we don't know how they do these things. Creepy either way.
Here is the video of it. Watch it before youtube removes it. I already got 2 warnings for it:
https://www.youtube.com/watch?v=7OW8VVMXr4M