Unlock: Complete Casing the Jewel Store
Playable Characters: Franklin, Michael
100% Gold Requirements:
Quick Grab – Steal the jewelry within 50 seconds
Protege Protected – Protect Franklin during the river chase
Clean Sweep – Steal the jewelry from all of the 20 cabinets
Mission Time – Finish the whole mission within 10:30.
Head to the jewelry store to start the heist. Start grabbing the jewelry in the center isle first, then grab the jewels circling around the area next.
Switch characters and use Franklin for the escape segment. Keep following your allies on the street and make sure you don't miss the tunnel on the right. Ride properly and not too fast. Also, utilize Franklin's special ability during intersections to make the turn easier.
Switch to Michael and run the cops off the road. Just keep driving, crossing the shallow waters, and don't hit your allies at the aqueduct to avoid failing the mission.