I watched the demo 4 times in a row, i can clearly say, that he is 100% clear, why ? because that was only a lucky strike, let me explain a bit more, he was in the room afraid to get out where there are much enemies, he was trying to track some enemies through the sound of bullets and there feet, he somehow detected that some are in front of the door as he returned back to check the stairs and after that he turned and walked to the door again and at the exact point he started to shoot randomly on where his feelings take him (i don't want to start my imaginary opinions). but what im trying to say, is that the demo is not enough, and one kill is not enough tho.