Haha..
Btw,have u unlocked the One Man Army?U have to spent at least 5
min with max 6 stars in order to gain that achievement.
One tip that i've found(and used) to gain that easily is:
Get as much ammo as you can, max out your SMG's ammo to 1200 and
the assault one to 600...make sure u have max health and armor
before proceeding.
In alonquin(the middle state), head to the northern area.
I remember its a distance away from the Northern Pay 'n Spray
shop.
There will be a road in a hilly section and next to the rail.I
think by now you should know that u can jump onto the tracks
through a hole in the wall because in one Ray's mission you have to
chase the bikers through the subway.
Anyway,walk a little in,and u will find that there's a small
ridge right-angled wall next to the leftmost path.This is the key
to hiding when shooting at police.Try to get 2 or 3 stars before
hiding as the police wont lose you.
And at 6 stars,its damn difficult to hold back the police
because if u dont shoot they advance en masse 
