Unlock: Complete Chop; and Father and Son
Playable Characters: Franklin
100% Gold Requirements for The Long Stretch
Accuracy – Finish whole mission with an accuracy of 60% or more.
Headshots – Kill 10 enemies using a headshot
Unmarked – Complete with minor damage to both health and armor.
Mission Time – Finish whole mission within 10:30.
Get some weapons and armor first from Ammunation. Stick from cover to cover and be very careful while inching your way out. Follow Lamar when he runs outside. You'll eventually hear the helicopter, so turn around and take down the enemies. Then get into a vehicle and shake off the police at the tunnels to escape.