Starting the GTA 5 Epsilon Mission(s)
Once you've completed the story mission Father and Son, Michael will be able to access the Epsilon Program website. Pull up your phone's internet app or sit down at any computer to log in. Search "Epsilon" in EyeFind and click on the first link, then fill out the evaluation form. Your answers have no bearing on the side missions.
After the evaluation, Michael will be asked to find a certain red truck...
Seeking the Truth
A question mark will appear in Raton Canyon. Head there to find the red truck in question. This side quest is nothing more than a cutscene, so find the truck and get it over with.
You'll then receive an email asking for a $500 dollar donation to the Church of Epsilon. Head to the website again and pay the money, or the next mission will not appear.
Accepting the Truth
The next mission will open up shortly; look for the Epsilon logo on your map. When it appears, head there to start the next leg of the enlightenment quest.
This time, your new contact Marnie will ask you to purchase further enlightenment for $5,000. You know what this means. Head to the Epsilon website once again and make a $5,000 donation.
Assuming the Truth
Another Epsilon symbol will soon appear in Grapeseed. Head there to encounter Marnie again. This time she wants you to steal five very special vehicles for some high rankling Epsilon members. The five cars are the Pegassi Vacca, Benefactor Surano, Declasse Tornado, Enus Super Diamond, and Dinka Double-T.
Tracking down these vehicles is much easier than you'd think - you just have to know where to look. Here are the locations:
Pegassi Vacca, parked in a driveway.
Benefactor Surano, parked in a small lot.
Declasse Tornado, parked at a body shop.
Enus Super Diamond, parked behind a building.
Dinka Double-T, parked at the LifeInvader offices.
With all five delivered, this mission will end, and another Epsilon logo will appear on your map.
Chasing the Truth
Head to the new logo to start the next leg of the mission. This time, Marnie and Jimmy need you to track down some items they believe are not of this earth. You need to find three items to satisfy their search. Much like the cars, this is really simple if you know where to look.
This first item is a TV. Head northwest from the starting point to reach this fence. The TV lies along it.
The second item is some sort of battery. Head directly north from the TV toward the dry river nearby. Just before the terrain drops off into the stream, you'll find the battery by some bushes.
The final item is a boot. Head southeast from the battery to find this little picnic spot. Just past it is the boot you're looking for.
With the search over, you'll now need to pay $10,000 for more "enlightenment." Crack open your phone and make two donations of $5,000 to the Epsilon website to unlock the next mission.
Bearing the Truth
Once the Epsilon logo appears, head there for the next mission. This time, Marnie tasks you with wearing Epsilon robes for 10 days. It's not as annoying as it sounds.
Start by heading the Epsilon website and buy the robes for $25,000. Yes, that's really how much they cost. After a one-day cycle, they will appear in your wardrobe.
Now, the 10 days might seem like a lot, but there's a trick to this task - sleeping. Simply sleep repeatedly with Michael, as this passes a lot of time very quickly. Sleep repeatedly until the 10 days are up, and a new mission will unlock.
Delivering the Truth
This one is very straightforward. Head to the new Epsilon logo to meet Torn, who tasks you with flying a plane to an airfield. Hop in and fly to the destination to wrap this one up.
Exercising the Truth
Another Epsilon logo will soon appear on your map. Make sure you're wearing your Epsilon robes, and head there to meet up with the whole Epsilon crew once again. They're ready to send you to meet their leader, but first you must run five miles through the desert. No seriously.
You have two ways to complete this one: active and passive. For the active route, hold down that run button and have Michael run until you receive a notice that the five miles have been completed. For the passive route, you can use a rubber band and a small weighted object to tie the thumbstick back and weigh down the run button. Come back later to find the task completed.
Choose whichever method you prefer, and after the task is completed, you'll receive a call for the final Epsilon mission.
Unknowing the Truth
You've been summoned to the Epsilon Center by Cris Formage, founder of the Epsilon program. Head to the Epsilon logo while wearing the Epsilon robes to start the final mission. You'll also need at least $50,000 in your bank account - money which Cris adds to a store of cash in his car to be sent off to various investments.
After the scene and the money paid, follow Cris' security detail to the designated spot. Upon arriving, you have two choices. You can leave the car at the drop zone to complete your enlightenment, or you can steal Cris' car and make off with the money inside.
Should you choose to steal the car, take out your oppressors and get back into the car quickly - we recommend an RPG or sticky bombs to get rid of the chopper. Escape the cops (or alternatively, the Epsilon guards), and the mission will end. You'll get a nice chunk of change from Cris' car, and either way you'll receive an achievement/trophy for your effort. Enlightenment complete.