If you haven't got it yet, or are starting now on Xbox Game Pass, then knowing how to unlock the Doom Eternal BFG is a priority. It's the iconic kill em all gun that's a staple of the series. This incredibly powerful weapon can clear an entire room of enemies in a single energy blast and it possible to survive almost certain death if you fire a shot at exactly the right moment. But how do you unlock the Doom Eternal BFG and where is it? Well…
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How to get the Doom Eternal BFG
There’s no easy answer here as it’s the same it’s always been: play the story until it gives it to you. While you can go back and reply any level with the Doom Eternal BFG once you have it, you’ll just have to play the waiting game until that actually happens. In Doom Eternal you’ll get the BF in the mission Mars Core, which is about half the way through the game.
The Mars Core level is a long one with multiple stages but you’ll get the BFG during the ‘Shoot a hole in Mars’ section where you - surprise - shoot a hole in Mars. Yes, the actual planet. You achieve this using the BFG 10,000, a giant, building sized version of the weapon which is more BFG than anyone needs in their life. Fortunately, once you’ve punched a hole in the planet’s surface the mega cannon breaks and releases the little (ish) BFG inside, for you to take with you. After that the weapon’s unlocked and yours to use, just as long as you have ammo so keep an eye for the floating, glowing green boxes that keep you and the BFG in business.