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• PoE 2 Expedition & Detonation Mechanic, Explained

• Expedition Passive Skill Tree

• PoE 2 Expedition Event Rewards

In Path of Exile 2, the Atlas map introduces four main endgame events: Delirium, Breaches, Rituals, and Expeditions. The Expedition system, originally from the Expedition League, is now a key feature in PoE 2's endgame. This guide will walk you through how to find and start an Expedition, interact with the Detonator and Explosives, access the Delirium Passive Skill Tree, and explore the unique rewards available from this system.

PoE 2 Expedition & Detonation Mechanic, Explained

On the Atlas screen, map nodes with guaranteed endgame events are marked with specific icons. Expedition nodes are identified by an ethereal light blue icon featuring a spiral-like shape. To ensure an Expedition encounter, use an Expedition Precursor Tablet in a completed Lost Tower slot on the Atlas screen.

Once you load into a map with an Expedition, explore until you find an area marked with Markers and a tent with one of four NPCs. These NPCs will introduce the event but won't detail the mechanics. At the center of the Expedition, you'll find a Detonator and a new UI element for Explosives on the bottom-right of your screen. Your objective is to strategically place Explosives to spawn Runic Monsters, Unearthed Remnants, and Excavated Chests.

• Runic Monsters: Spawned by Explosives near Red Markers. Larger Markers result in larger Runic Monster packs. These monsters are empowered by Unearthed Remnants.
• Unearthed Remnants: Indicated by a tooltip above a relic on the ground. They offer both beneficial and negative event modifiers, such as increased Elemental damage from monsters but also increased item Rarity from Excavated Chests.
• Excavated Chests: Spawned by Explosives near Black Markers with the spiral Expedition symbol. They contain event-specific rewards like Artifacts, Logbooks, powerful Currencies, Waystones, and endgame gear.

To use Explosives, click the Explosives button, then hover over the Expedition area to see the area of effect. Ensure the green circle radius covers the Markers you want to activate. For optimal farming, spread out your Explosives to avoid overlapping AoE circles.

After placing your Explosives, return to the Detonator and interact with it to activate the Markers within the Explosives' AoE, spawning empowered Runic Monsters and starting the event. If you die, the map resets, but you can leave and return to the Expedition area to continue the event later, using powerful AoE abilities to tackle all enemies at once.

Expedition Pinnacle Map

In Expeditions, Runic Monsters and Excavated Chests may drop an Expedition Logbook. To access the Expedition Map, speak with Dannig in the Hideout, slot the Logbook into the bottom slot, and click "Open Portals". These portals, similar to Waystone maps, lead to an expansive Expedition event with more than triple the usual number of Explosives.

The Expedition Pinnacle Map system includes a Pinnacle Boss, Olroth, who doesn't always spawn but has a higher chance in higher-level maps. If Olroth is present, a skull icon will appear on the minimap. Strategically place your Explosives to reach this skull and engage Olroth. Defeating Olroth grants 2x Expedition Passive Skill Tree points, crucial for enhancing your Expedition experience.

Expedition Passive Skill Tree

Located in the Atlas Passive Skill Tree menu, the Expedition Passive Skill Tree enhances the Expedition event by increasing Expedition Currency rewards, boosting Monster spawns, and amplifying Remnant effects. To view your Expedition passives, open the Atlas Map, select the Atlas Passive Skill Tree menu on the top-left, and look to the top right of the Atlas Skill Tree.

The Expedition Passive Skill Tree features a glowing blue spiral with eight Notable nodes and eight nodes that increase Logbook and Olroth difficulty. You earn 2x Expedition Passive Skill points for defeating Olroth, which you can use to unlock these nodes.

Recommended nodes include 'Disturbed Rest', 'Detailed Records', and 'Timed Detonations' for significant reward boosts with minimal downsides. Next, consider 'Weight of History', 'Unearthed Anomalies', and 'Legendary Battles' for enhanced rewards, though they increase difficulty. Avoid 'Extreme Archaeology' due to its drastic reduction in Explosives, which limits overall rewards.

PoE 2 Expedition Event Rewards

Artifacts & Coinage Currencies Are Used For Purchasing Gear

The primary rewards from Expeditions are Artifacts, which come in four types and can be collected like other Currencies. Each Artifact is used to trade with a specific Expedition vendor for different types of gear.

Reward	Broken Circle Artifact	Black Scythe Artifact	Order Artifact	Sun Artifact	Exotic Coinage
Use	Used for trade with Gwennen	Used for trade with Tujen	Used for trade with Rog	Used for trade with Dannig	Refreshes the inventory of any Expedition vendor
Gear	Weapons	Belts and Jewelry	Armor	Used to acquire other Artifacts	N/A

Each Expedition features one of these vendors, so you can only access one vendor's inventory per encounter. Artifacts remain in your inventory after completing a map, so bring them to Expedition Maps. Exotic Coinage, another reward, can refresh any Expedition vendor's inventory.

Expedition Logbooks Open A Unique Expedition Map To Progress

Expedition Logbooks, which drop from Runic Monsters and Excavated Chests, are key to the Expedition Pinnacle system. Bring a Logbook to Dannig to open the Expedition Map and explore various Expedition zones. There's a chance for the Pinnacle Boss, Olroth, to spawn in these maps. Defeating Olroth rewards 2x Expedition Passive Skill Tree points, high-tier Currency, and exclusive Uniques. As you increase the difficulty of your Expedition Maps and Logbooks, Olroth's spawn rate and reward quality improve.