|Tweak, Aubrey's Diner||200 RP, $800, The Fast - Enhanced|
Head on over to Aubrey’s Diner, located to the north of Lorna’s Truck Stop to find a man scurrying around the bins. This is Tweak and he likes your vibe so much that he’s willing to help create some performance enhancers for you. In order to do that, he’ll need Jimson Weed and Bliss Oil, the latter of which can be looted from random houses and the bodies of Angels. The Jimson Weed should be marked on your map, you can find a supply of them in the fields to the northwest of Hope County Jail.
Reach Tweak’s playground
With the ingredients in hand, make your way to Tweak’s playground located to the southeast of Hope County Jail, a place named Prosperity. Once you reach the area, head over to Tweak and hand the ingredients over. You’ll now need to run the obstacle course he’s set up for you.
Equip the Shotgun and destroy the targets 
There’s a box full of Shotguns nearby, pick one up and then follow the objective markers to the targets scattered around the area. There’s no time limit at the moment so take your time to get used to the layout.
Equip the AR-C and destroy the targets 
Another box of weapons, this time containing AR-Cs, will be in front of you. Pick one up and begin blasting down the targets around you, remember that arrows will guide you around the course.
Equip the Baseball Bat and hit the pigs
Finally, head over to the west side of Prosperity and equip a bat. Head into the pen and begin hitting on the helpless pigs. With all the objectives met, head over to Tweak and talk to him to receive the performance enchancer.
Complete the course using the Fast homeopathic [04:00]
You’ll find yourself back outside, equip a Shotgun again and pick up the dose of The Fast on the side. Once you use it, the timer will begin and you’ll need to complete the course you did previously within four minutes while under the effects of the Fast. This means you’ll be running at quicker speeds and you’ll aim quicker too, this should be make it easier for you and the time is very generous. Return to Tweak once you beat the course to conclude the mission.