It's already an achievement in of itself if you can make it all the way down to Chronos in the House of Hades in Hades 2. Compared to how the first Hades game was when it first came out in Early Access, Hades 2 has mountains and mountains more content, which means there's a whole lot more standing between you and the final boss. To be more precise, to reach Chronos you'll have to get through Erebus (Hecate), Oceanus (Scylla), the Mourning Fields (Infernal Cerberus), and of course Tartarus itself.