A couple things,
First-
You have got to be Joking ACP
after reviewing the demo I can say that it is clean. Please tell me you reviewed the demo and used /r_shownormals 1 !!!!!
Look at the start he had a few enemies behind the walls he could have followed them through the wall to kill since they where closer..IT IS HUMAN INSTINCT!!!!
Yet he chose to pre-nade the bridge because you can clearly hear the gun shots above!!!!!!
Same for the Boathouse he chose to pre-nade the multiple gunshots that you could clearly hear!!!!!.
My Second thing to say is-
CLEAN!!!