Konami has opened a new secret event in Metal Gear Solid V: The Phantom Pain. It can only be accessed when a set of special conditions are met, and thankfully, Konami has provided those very instructions for everyone. It’s called the “Secret Nuclear Disarmament Event” and as its name suggests, it involves getting rid of nuclear weapons. Read on to learn more about the event and how to access it.

How to access the Secret Nuclear Disarmament Event:

Instructions posted by Konami

1. You must have completed Mission 31.
2. You must not own or be currently developing a nuclear weapon. If you have any nukes in stock, you must dismantle them.
3. Certain conditions related to nuclear proliferation must be met on the regional server for your corresponding gaming platform (PlayStation 4, PlayStation 3, Xbox One, Xbox 360, PC (Steam)).
4. All nuclear weapons on the regional server corresponding to your console or platform must have been dismantled. In other words, the amount of nukes on your platform’s server must be equal to 0.

Meet all four conditions and the disarmament event will be triggered when you return to Mother Base or complete a main mission, Konami explained. “Should new nukes be developed after conditions 3 and 4 have been fulfilled, this event can be repeated by fulfilling all four conditions again,” it said.

Below are the latest in-game nuclear proliferation levels.

The Phantom Pain received glowing praise upon release, including a 10/10 score from GameSpot. It also represents something of a turning point for Konami, as series creator Hideo Kojima is rumored to have exited the company on October 8. However, Konami claims the veteran game designer is only on vacation.

Overall, the game has shipped 5 million copies.