DOOM Eternal: 12 Tips & Tricks The Game Doesn't Tell You

1. How To Unlock The Unmaker

And you thought the lightsaber-esque Crucible broadsword was the coolest endgame weapon in the campaign.

Turns out, if you're skilled enough, you can unlock the "Unmaker" - that one weapon that sits in stasis at the centre of the Fortress of DOOM.

To unlock, you need all six "Empyrean Keys" - rewards given for conquering the brutally hard Slayer Gates.

Located in Exultia, the Cultist Base, Super Gore Nest, Arc Complex, Mars Core and Taras Nabad levels, once you've beaten the lot, the Unmaker is yours.

I'd recommend only trying these challenges after you've beaten the story though, as only then will you have every weapon and ability unlocked to stand a chance.