Iron Trials returns to Call of Duty: Warzone on March 3, which serves as the battle royale’s “hard mode” for the game’s most competitive players. This mode drastically changes the feel of Warzone with faster circle collapses, increased player health, changes to equipment, and more. Here we highlight everything you need to know about Warzone’s Iron Trials.

Iron Trials is a mode that was previously introduced on the Black Ops Cold War version of the Verdansk map as Iron Trials ’84, but this time the experience is being made available on Warzone’s smaller Rebirth Island map in a duos playlist.