Blitz Play is the third heist mission given to you by Steve Haines. You're objective is to hit up an armored truck and "requisition" the money inside of it. This mission is pretty straight forward.
The heist set-up missions are to buy masks and boiler suits, steal a garbage truck as well as a tow truck, and secure a getaway vehicle. You'll start the mission by blocking the road with the garbage truck and using the tow truck to flip the armored truck onto it's side. After blowing open the doors with plastic explosives, you'll have to fight off the cops that arrive. After awhile, Franklin will have to use the garbage truck to get to the getaway car. Once at the car, you'll destroy the garbage truck and switch to Micheal where you will deliver the stuff from the armored truck to your contact ending the mission.
Just enjoy the mission while doing what the mission objectives tell you and you'll easily get this achievement.