Hades 2 mod lets you play the original game as Mel and adds a stack of new Boons

A new Hades 2 mod drops Melinoe into the original Hades, letting you run through Zagreus's story with a fresh protagonist and a batch of new Boons built specifically for the crossover.

The source is light on specifics, but Hades 2 itself is a significantly larger game than its predecessor — roughly double the content, with Melinoe tasked with saving both the underworld and overworld from separate threats while a colossal monster guns for the gods.