Step-by-Step Walkthrough for all "The Truth" Missions

You can only do this wtih Michael! Other characters cannot participate in quests from the Epsilon Group. This quest line becomes available very early in the game, after unlocking Michael as a playable character. Doing all parts of the quest line can earn you up to $2,100,000 at the end. So it's well worth the time investment.

Step 1 (0:05) - Open the internet browser of your in-game phone, go to the Epsilon website "epsilonprogram.com" and complete the evaluation.
Step 2 (0:45) - A question mark will show up in Raton Canyon after a while. Go there.
Step 3 (1:09) - After the cutscene you will get an e-mail. Open the attached link and donate $500 to the Epsilon website.
Step 4 (1:39) - The Epsilon symbol will appear on the world map after some time. Go back to your house and save the game a couple of times until the symbol shows up on the world map. Go there.
Step 5 (1:54) - After the cutscene you will get an e-mail. Open the attached link and donate $5,000 to the Epsilon website.
Step 6 (2:12) - Go to the next Epsilon symbol (takes some time until it shows up on your map, go to sleep in your safehouse again).
Step 7.1. (2:31) - Collect all five Epsilon vehicles (1. Declasse Tornado)
Step 7.2. (3:16) - Collect all five Epsilon vehicles (2. Pegassi Vacca)
Step 7.3. (3:36) - Collect all five Epsilon vehicles (3. Benefactor Surano)
Step 7.4. (3:57) - Collect all five Epsilon vehicles (4. Enus Super Diamond)
Step 7.5. (4:21) - Collect all five Epsilon vehicles (5. Dinka Double-T)
Step 8 (4:58) - Go to the next Epsilon symbol (takes some time until it shows up on your map, go to sleep in your safehouse again).
Step 9 (5:18) - Complete the mission.
Step 10 (7:21) - Donate $10,000 to the Epsilon website.
Step 11 (7:40) - Go to the next Epsilon symbol (takes some time until it shows up on your map, go to sleep in your safehouse again).
Step 12 (7:57) - After the cutscene you will get another e-mail. Open the attached link and buy the robes for $25,000 from the Epsilon website.
Step 13 (8:23) - After the robes are being deliverd (takes 1 day), get them from Michaels closet. You need to wear them for 10 cumulative days. Keep going to sleep until 10 days have passed.
Step 14 (8:56) - Go to the next Epsilon Symbol, after wearing the robes for 10 days. You might need to take a few more naps before the symbol shows up properly.
Step 15 (9:25) - Complete the mission.
Step 16 (9:55) - Go to the next Epsilon symbol (takes some time until it shows up on your map, go to sleep in your safehouse again. also you need your robes).
Step 17 (10:08) - Wander 5 miles through the desert wearing Epsilon robes. After that you will get a call, take it!
Step 18 (10:54) - Go to the final Epsilon symbol (takes some time until it shows up on your map, go to sleep in your safehouse again).
Step 19 (11:05) - Finish the mission. To get $2,100,000 and a gold medal you must kill everyone and escape with your vehicle.