If you spawn on the side were field is behind you go to the balcony were the alleyway entrance is to the left.

Jump on to the balcony handle, look back on top of the door you should see a sun blind and under that a small window sticking out.

Have your back to it and point a RPG at a slight angle and jump and shoot just before you start to go down and move back and you should land on top of the window.

Move back to the end and you should be fine for Mick-Miyers and sniping.