Here is a concise summary of the provided text:
**Title:** Uncovering a Hidden Horror Mission in GTA San Andreas
**Summary:**
* The narrator receives a mysterious Instagram message from an anonymous follower claiming to have discovered a hidden, yearly-activated mission in GTA San Andreas.
* The follower shares a 5-step process to unlock the mission, which the narrator cautiously decides to follow.
* The steps involve:
1. Loading a new game
2. Completing the first mission with a "non-continuity glitch"
3. Obtaining a weapon without using cheats/mods
4. Shooting specific signs in a mysterious, hidden well in Montgomery
5. Killing a pedestrian near bioengineering facilities
* After completing the steps, a mysterious mission icon appears, leading to a chilling encounter with zombie-like characters that emerge from the ground, ultimately causing the game to fail and the narrator's character to die.
* The video concludes with the narrator thanking viewers and inviting them to engage with their social media channels for more horror story content.
Here are the key facts extracted from the text, numbered and in short sentences, excluding opinions:
**GTA San Andreas Video Content**
1. The narrator received a message from a follower claiming to have found an unknown mystery in GTA San Andreas.
2. The mystery supposedly occurs once a year and requires a series of steps to activate.
3. The follower asked the narrator to keep their name anonymous if the narrator decides to make a video about it.
**Steps to Activate the Mystery**
4. Step 1: Load a new game in GTA San Andreas.
5. Step 2: Complete the first mission without entering CJ's house afterwards (dubbed the "non-continuity glitch").
6. Step 3: Obtain a weapon without using cheats or mods.
7. Step 4: Go to the town of Montgomery, specifically to the radioactive well, and shoot at four specific signs.
8. Step 5: Go to the bioengineering facilities and take the life of a passing pedestrian.
**Outcome of the Steps**
9. After completing the steps, a mission icon appeared on the radar.
10. The icon was located near a green molecule symbol.
11. Upon approaching the icon, the narrator encountered zombie-like characters.
12. The mission objective was to finish off these characters.
13. More characters spawned from the ground, causing the game to malfunction.
14. The narrator's character eventually died in the mission.