Eris

The personification of Strife and second ascent boss, who wields the Adamant Rail and periodically buffs her own damage in the Rift of Thessaly.

Eris is the second boss of the ascent and the gate at the top of the Rift of Thessaly, the mid-surface region above the City of Ephyra. She is the personification of Strife, and she fights with the Adamant Rail, the rifle weapon carried over from the first Hades. That weapon defines the encounter: this is a ranged duel against a boss who can also turn up her own damage as the fight goes on.

The fight

Eris keeps her distance and fires the Adamant Rail at you, so the core of the fight is dodging sustained ranged pressure while you close enough to answer it. Her signature wrinkle is that she periodically buffs her own damage, so the longer the fight runs, the harder her shots hit. That self-buff turns a slow, careful fight into a losing one if you let it drag, which pushes you to find a balance between staying safe from the Rail and actually ending the fight before her damage spikes out of reach.

Do not let this fight go long. Eris buffs her own damage over time, so a passive, purely defensive approach trades your safety now for shots you cannot survive later. Pressure her on the openings rather than waiting indefinitely.

How to approach it

You need to apply pressure without standing in her line of fire. Use Sprint to break the Rail’s aim and reposition, then commit damage when she is reloading or recovering. A burst-heavy damage engine suits her well because it shortens the fight before her self-buff stacks up, for example Zeus Blitz for the threshold burst or Apollo’s Daze for the wider reach that helps you hit her without fully closing. Keep your Magick and Omega for clean damage windows, and treat a charged Selene Hex as a way to spike her down once her buff makes the trade worse.

What makes it hard

Eris combines two pressures the earlier bosses keep separate: ranged-attack reading and a damage clock. You cannot simply play it safe, because her self-buff makes safe slowly fatal, and you cannot simply rush, because the Rail punishes a sloppy approach. Finding the tempo that beats both at once is the test, and it is a step up from the more one-dimensional bosses below her.

What beating it means

Past Eris lies Mount Olympus, the climb toward the gods and the source of Adamant, the high-tier weapon reagent. She is the middle rung of the surface ladder, the bridge between Polyphemus’s telegraphed brawling and Prometheus higher up. Beating her reliably means your build can win a fight on a clock, not just a fight of attrition.