In games nowadays, "the end" might not be the end. Even after the main campaign ends, the story still continues, in the form of post-game dungeons, or hidden endings. For Payday 2, which was released more than 5 years ago, all the players know there still is a hidden ending. But no one knows how to get it.

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As time goes on, the secret ending of Payday 2 becomes a great riddle that piques the interest of gamers. People working with each other, sharing their ideas and try all kind of things in order to unveil that secret. And finally, after 5 years, there is a player successfully solve this "riddle" of Payday 2 secret ending. That player is "General McBadass" and he had uploaded a video of how to unlock this ending, step by step to YouTube.

You can see the tutorial in the below video:

Specifically, you will need to put together a disk full of the runes, constructed from four individual components. Next, a medallion has to be acquired and nine specific keys on a piano must be struck. Every player who does so will get a different combination of runes corresponding to 20 of 50 possible in-game achievements from specific objectives from different maps.

After that, it's time for the White House mission with your teammates. The requirement is everybody has to finish the previous steps. If the conditions are met, a certain painting within the White House will glow. The next step is blow up the wall behind the painting, which opens the way to a vault door with yet more runes that must be deciphered while endless waves of demons spawn.

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Once the code is cracked, players will open the door and get some story from the Dentist character who must then be shot. After placing some Mayan gold bars on specific floor tiles, the room lights up like a rock concert before fading to white.

By completing all of those tasks, players are treated to a live-action scene that lasts more than seven minutes followed by a lengthy epilogue text crawl. In the end, it all wraps into references from several in-game characters that players believe unveils a supernatural connection between the character Bain and the president of the United States.

And that's the secret ending and the final hidden achievement of Payday 2.