
You guys! you have to go to the first apartment that you go into, right to the top of the stairs, into the window. From there, there is as many stingers as you want. once you hit the heli, swap to a fast gun. (i found a silenced p90 somewhere on that level) and watch the soldiers come running. it is truly a terrifying sight. there's hundreds of em.
(its a bloody convention out there)
The dogs are easily set aside because they have to go up the stairs.

That one is simple, but the heli near the church is a lot more difficult since it can blow the roof off the church and kill you as you get another stinger.