If you wanted Doom to be hard, then it sounds like you're going to get your wish. Executive producer Marty Stratton and creative director Hugo Martin told IGN that no one at developer Id Software has been able to beat the game on its highest difficulty setting.

Stratton and Martin joined GameSpot on a Doom single-player livestream and told us about the intense difficulty level. Ultra-Nightmare combines the second highest difficulty, Nightmare, with permadeath, meaning if you die once, you have to restart at the beginning of the game. Stratton also talked about a feature that could have friends competing to see who gets further.

"When you die, it drops a helmet, a Doom marine helmet, in the world and your friends will see those and you'll see them," he explained. "So you can always try and get a little bit further than where you see that collection of helmets early in the game."

In the original Doom, space marine corpses could be found throughout the game. Although they weren't representative of actual players' bodies, they were protagonist Doomguy's deceased friends.

Doom releases for PS4, Xbox One, and PC on May 13.

If you want to see Doom in action, you can take a look through the links below: