The two routes, eight bosses
The Underworld (Erebus → Oceanus → Fields of Mourning → Tartarus) ends at Chronos. The Surface (City of Ephyra → Rift of Thessaly → Mount Olympus → The Summit) ends at Typhon. You face four bosses per route.
Underworld bosses
- Hecate — Erebus. Her clones and shifting bolts are the threat. Clear the summoned adds with your Cast so you are not fighting crossfire, and learn to tell the real Hecate from the fake. Keep mid-range: bait a cast, sidestep, then strike after her spell resolves.
- Scylla & the Sirens — Oceanus. Three singers: Roxy (drums, stationary), Jetty (guitar), Scylla (lead). Kill Roxy first to erase the floor-spanning shockwaves, then Jetty, then Scylla. Scylla only takes damage from the front, so use your Special. At half health they all revive stronger. Drops Pearl.
- Infernal Cerberus — Fields of Mourning. Most attacks fire forward, so stand behind or to the side. Roll through the fire cones (do not retreat) and circle the flame breath — he turns slowly. At half health he burrows and summons adds; clear them, then hit him when he emerges at the edge of the blast marker. Drops Tears.
- Chronos — Tartarus (final). Two phases. In phase two the arena goes dark with one lit safe circle — stand outside it and you take lethal damage. The scythe sweep always hits front, so hug his side or back. The hourglass adds heal him; kill them first. Drops Zodiac Sand.
Surface bosses
- Polyphemus — City of Ephyra. Slow with long wind-ups; the pause after a swing is your window. Roll through the shockwave toward him. When he cups a hand to his ear (“Where Are You”), do not attack — he hurls a boulder at your last position; use Hex or enhanced-Cast boons (e.g. Demeter’s Arctic Ring) to damage him then. Drops Wool.
- Eris — Rift of Thessaly. All attacks fire forward; get behind her. Use the two pillars to block her sniper shots. At 75/25/10% health she turns invulnerable and gains +100% damage per phase — unload an Omega burst the instant she lands. Drops Golden Apple.
- Prometheus — Mount Olympus. Do not retreat; most moves want you to dash toward him. His flame walls and fists can be deflected back with Athena’s Deflect. At 66% and 33% he previews fixed flame patterns — learn the safe tiles, not the flames. Drops Feather.
- Typhon — The Summit (final). Four phases with a hidden health bar. In phases two and four he vanishes into the storm and lays eggs — shatter them within ~10 seconds or elites hatch (priority the high-health eggs). His tongue laser has no hitbox, so stand right in front of it safely; in phase three Zeus stuns him for 15 seconds — mash the tongue. Phase four doubles all damage, so play conservative. Drops Void Lens.