AI LIMIT: Eirene’s Furnace of War Guide | How to Get Eschaton Heavenflame

A quick DLC guide for unlocking Eschaton Heavenflame.

Game Guide by Faviyan Mustafiz on Apr 05, 2026

If the spell you're looking for in the DLC is Eschaton Heavenflame, the way to get there is much easier than it seems at first. This spell is directly linked to Prometheus. That means that looking for side paths isn't the real job. The real job is to finish the last fight without any problems and then get the reward.

AI LIMIT: Eirene’s Furnace of War, PC, Gameplay, How to Get Eschaton Heavenflame, Screenshot, NoobFeed

The origin of Eschaton Heavenflame

There is no hidden chest or world pickup for Eschaton Heavenflame. After Prometheus goes down, it goes into the reward statue trade pool. If the spell is still missing, it's probably because Prometheus hasn't been beaten yet or the statue reward hasn't been picked up yet.

AI LIMIT: Eirene’s Furnace of War, PC, Gameplay, How to Get Eschaton Heavenflame, Screenshot, NoobFeed

The best way to get through Prometheus

The safest way to get to Eschaton Heavenflame is to stop acting like Prometheus is a race for burst damage. This fight is very hard on greed. Mid-range spacing is best because it gives you enough space to read the start of each attack while still keeping the punish windows close. After a full dodge sequence, one or two hits are enough.

AI LIMIT: Eirene’s Furnace of War, PC, Gameplay, How to Get Eschaton Heavenflame, Screenshot, NoobFeed

How to get through the harder part

Most of the time, people fail in the second half of the fight. Prometheus becomes more aggressive, which often makes people move quickly. Slowing the fight down is the safer choice. Wait for the whole sequence, avoid the committed swing, and only punish the recovery when you can clearly see an opening. After a full reset or clear distance, healing should happen.

AI LIMIT: Eirene’s Furnace of War, PC, Gameplay, How to Get Eschaton Heavenflame, Screenshot, NoobFeed

How to get Eschaton Heavenflame

The last step is easy once you beat Prometheus. Go back to the statue and trade it for Eschaton Heavenflame. You don't need to keep looking for another trigger on the DLC map. The unlock path is based on beating the boss and then getting the reward right away.

Also, check our in-depth AI LIMIT Review, AI LIMIT - Eirene's Furnace of War Review and other guides below: