REWARDS - $10000
Keep your gun circling around on the four people in front of you to make sure they keep their hands raised, or you could just blast the cop. Whatever the case, you'll eventually get a 3-star wanted level. After the cutscenes, Catalina tells you to smash the 3 ATMs to get as much cash as possible, so either shoot them or hit them with a melee weapon.
Once you do that, follow Catalina out the back door and into an alley filled with cops. Keep moving down it, gunning down the cops as they appear, until you get to a point where two motorcycle cops arrive. Gun them down and then hop on the bike. Follow Catalina as closely as possible, without worrying about the two cops on the bike (one goes down on the broken bridge jump and the other goes down under the highway overpass). At an intersection, Catalina will fall off her bike, so head towards her so she can jump onto yours, then head back to the cabin. Mission finished and $10000 earned.