- Prerequisites: None
- Rewards: The Fast (Enhanced) (Recipe), $800
- Details: Help Tweak test his performance enhancer.
MISSION Commencement
Someone is scrabbling about by the trash bins outside Aubrey’s Diner, along the Henbane River north of Lorna’s Truck Stop (cult outpost). This disheveled character is Tweak, and he might have a pick-me-up to help you during confrontation with the cult.
GATHER Jimson Weed Plants (2)
He needs some ingredients first, though; head to the overgrown railroad tracks below the road bridge northwest of Hope County Jail. Your map updates as you discover a crop of Jimson Weed growing. Harvest a minimum of two plants here.
If you harvest all the plants, you’ll have more ingredients if you decide to craft your own “Homeopathic remedies” later on.
REACH Tweak’s Playground
BRING the Ingredients to Tweak
Tweak makes his home in the abandoned Ghost Town known as Prospect, in the wilderness south of Hope County Jail. Drive there, hand over the ingredients, and agree to attempt a short agility course to show your baseline competency.
EQUIP the Shotgun
DESTROY the Targets (5)
Don’t worry about embarrassing yourself on this test run; the route takes a little time to learn. Grab the shotgun from the equipment table (
1), then run through the fun-house doorway with the pumpkins and arrows adorning it, onto the town hall roof, and shoot the target 
as you climb onto the roof.
Sprint across the roof to the roof of the general store, blasting the target here 
. Next, hop onto the cabin roof for the next target 
Turn west, drop to the street, and sprint into the bank, shooting the target inside 
. Exit the bank and turn right to shoot the final target at the tree 
.
EQUIP the AR-C
DESTROY the Targets (4)
Grab the AR-C from the equipment table by the central cabin (7) and shoot the moving target inside 
. Cross the road and fire at the moving target inside the general store 
, then run south and shoot both targets,
and 
, inside the southeast cabin.
EQUIP the Baseball Bat
HIT the Pigs
Sprint west to the graveyard entrance. Grab a baseball bat from the table here (12), and set about whacking two squealing pigs. They know what they did. One whack each is all that’s necessary.
TALK to Tweak USE the Fast Homeopathic
Head into the town hall, where Tweak is finishing the homeopathic he’s nicknamed “Fast.” Time to repeat the course; head outside, back to where you picked up the shotgun (1). Grab the Fast Homeopathic, and access your Utility Wheel to use it.
COMPLETE the Course Using the Fast Homeopathic (04:00)
As soon as you consume the Fast, the course begins again. This time you have four minutes to repeat the course, though your vision is blurred at the corners and you’re moving more quickly. Follow the same route. It’s worth having your shotgun reloaded before consuming Fast, so you don’t waste time reloading during your five-target takedown. Reload your AR-C while running between targets and buildings. Finally, each pig needs killing now, which takes around four swings each. A competent runner can complete this in around 1:20.
Climb the roof of the cabin Tweak is on, ignoring your alarmingly quick heart rate. Tweak concludes his mission, and you have access to Fast. This is well worth utilizing when you must defeat multiple foes (e.g., the John, Jacob, and Faith Seed missions).
Don’t forget to visit Tweak at Prosperity again to conclude his missions, and commence Side Mission: Furious.