Different games approach their design in different ways. Games like Grand Theft Auto are masterclasses in open-world freedom — nothing is forced on you. You can play the campaign, explore the map, try different activities, or simply cause chaos for fun.
However, not every game is built that way. Different genres require different design philosophies. For example, in a role-playing game, you can’t just ignore the story and run around endlessly — there are quests to follow, narratives to complete, and challenges tied to progression.
In this blog, we’ll focus on a game that leans more toward that structured experience — Last Epoch — and specifically, its dungeons. This will be a complete guide explaining what each dungeon entails, how to unlock them, and how to defeat their bosses efficiently.
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Last Epoch Dungeons Overview
| Dungeon Name | Location & Era | Required Key | Recommended Level | Main Mechanics | Boss & Phases | Tips / Rewards |
|---|---|---|---|---|---|---|
| Lightless Arbor | Ruined Era – Near Surface Waypoint | Lightless Arbor Key | 25+ | Constant darkness; use Amber Light to survive and reveal areas. | Stone Titan – Phase 1: fight the body; Phase 2: destroy the exposed heart with faster attacks. | Keep light active at all times; use throws to scout and trigger traps safely. |
| Soulfire Bastion | Imperial Era – Near Felled Wood Waypoint | Soulfire Bastion Key | 45+ | Dual-element dungeon (Fire & Necrotic). | Cremorus – Phase 1: Fire attacks (flame waves, fireballs); Phase 2: Necrotic attacks (beams, corruption puddles). | Focus on Fire & Necrotic resistances; watch boss color shifts to predict attacks. |
| Temporal Sanctum | Ruined Era – Near Ruined Coast Waypoint | Temporal Sanctum Key | 55+ (Endgame) | Time-shifting between Ruined and Divine Eras; different paths per timeline. | Julra, the Time Mage – 3 phases with lasers, time bubbles, and rapid timeline shifts. | Use Time Shift strategically; stay alert for one-shot zones and era changes. |
Before You Enter a Dungeon
Before diving into dungeon specifics, there are a few key things you need to know. Each dungeon in Last Epoch requires a specific dungeon key for entry. There are currently three different dungeons, and each uses its own key.
Every dungeon features unique mechanics, boss fights, and a specialized reward system. If you fail a dungeon, you’ll have to restart your run with a new key, so plan carefully before heading in.
The Dungeons
1. Lightless Arbor
The first dungeon we’ll discuss is the Lightless Arbor, located in the Ruined Era, near the Surface Waypoint. You’ll need the Lightless Arbor Key to enter, and you should be at least level 25 to obtain it.
This dungeon is completely dark. If you stay in the darkness for too long, you’ll quickly lose health and die. To survive, keep your Amber Light active — it keeps the darkness at bay. You can also throw the light ahead of you to illuminate an area, scout for enemies, or trigger traps from a safe distance.
The Boss and Its Phases
The dungeon’s boss is a massive Stone Titan. Though slow, he’s extremely powerful. The battle takes place in a pitch-black cavern, staying consistent with the dungeon’s theme.
The fight has two phases:
- Phase 1: You battle the Stone Titan’s body.
- Phase 2: After defeating the body, you’ll face his exposed heart, which uses faster, deadlier attacks.
2. Soulfire Bastion
The second dungeon is the Soulfire Bastion, found in the Imperial Era, near the Felled Wood Waypoint. You’ll need a Soulfire Bastion Key, and the dungeon becomes available once you reach level 45 or higher.
This dungeon is a fiery fortress filled with undead enemies and lava hazards. You’ll face monsters that deal Fire and Necrotic damage, so prepare your resistances accordingly.
The Boss: Cremorus
The dungeon’s boss, Cremorus, is a fiery necrotic lich who loves to fill the entire arena with deadly area attacks. He constantly switches between fire and necrotic elements, forcing you to adapt your defense and timing.
Phases
- Phase 1 (Fire): Cremorus launches fireballs, flame waves, and creates lava pools across the arena.
- Phase 2 (Necrotic): He switches to necrotic beams and spreads corruption puddles on the floor.
Cremorus often shifts between these two phases mid-fight, so pay close attention to his color changes and adjust your attacks and shields accordingly.
3. Temporal Sanctum
The final dungeon is the Temporal Sanctum, located in the Ruined Era, near the Ruined Coast Waypoint. It requires a Temporal Sanctum Key, and you’ll need to be at least level 55 to access it — which means you’ll likely be near endgame.
This dungeon is all about time travel. It constantly shifts between two timelines — the Ruined Era and the Divine Era. You’ll need to use Time Shift to move between these realities. Some doors and paths exist only in one timeline, so navigating the dungeon feels like playing two maps simultaneously.
The Boss: Julra
The boss here is Julra, a powerful Time Mage who controls both eras. She’s dangerous, fast, and full of one-shot mechanics. Julra manipulates glowing zones that alter how time flows for you — standing in the wrong place at the wrong moment can instantly end your run.
She also changes timelines at will, forcing you to adjust on the fly.
Phases
Julra’s fight has three phases, each one more intense than the last:
- Phase 1: She uses small laser beams and time bubbles. This phase ends when she reaches 70% HP.
- Phase 2: Adds cross-shaped laser beams and time explosions. This continues until she drops to 35% HP.
- Phase 3: Julra becomes extremely aggressive, using multiple lasers, constant teleports, and rapid era shifts — making it the toughest phase to survive.
Conclusion
We’ve reached the end of this Last Epoch Dungeons Guide. Now you know everything you need to conquer each dungeon — from their mechanics and boss phases to where to find them and how to unlock access.
With this knowledge, you’ll be well-prepared to dive into these challenges, defeat their powerful bosses, and claim the unique rewards waiting for you in every dungeon.
FAQs
Are dungeons worth doing in Last Epoch?
Yes, absolutely. Dungeons are a core part of Last Epoch and essential for progression and rewards.
What does each dungeon do in Last Epoch?
Each dungeon has a unique boss, mechanic, and reward system, making them distinct experiences.
How long does it take to reach level 100 in Last Epoch?
Most players reach level 100 in roughly 60–80 hours of consistent gameplay.