Hades 2 makes many changes to the formula that made the original such a hit, and gives Melinoë new tools to work with on her journey to defeat Chronos, the Titan of Time. Some of these changes include a set of Nocturnal Arms that are a far cry from the Infernal Arms from the first game for Melinoë to unlock.
7 Things You MUST Know | Hades 2
In Hades 2, much like its predecessor, Melinoë will be tasked with endlessly running through the Underworld to achieve her goals using weapons and the Gods of Olympus themselves. As a result, she’ll be able to select a different Nocturnal Arm to take with her on each run, completely changing her fighting style based on the skills, upgrades, and divine blessings bestowed upon her along the way. Each weapon has a unique unlock condition and they aren’t uniform like they were in the original game, so here’s how to unlock every Nocturnal Arm in Hades 2.
Since Hades 2 is in Early Access, there may be changes to all currently available weapons, as well as new Nocturnal Arms, in the future. Don't let that stop you from unlocking them all during your runs, though.