Bosses

Lanterns Sentinel Prime: Location and Chest Reward

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Looking for Sentinel Prime in Lanterns? Head to Iron Harbor and identify its The Spire encounter, then check Inventory for your chest reward.

Sentinel Prime is the regional boss at The Spire in Iron Harbor, with LV 95 displayed on its boss bar. One victory with 100% personal damage contribution awarded 1 Uncommon Chest, automatically added to Inventory. Press I and select Chests to find stored rewards.

Sentinel Prime

Type
Regional boss
Encounter location
The Spire (Iron Harbor)
Level
95 level (Displayed on the The Spire boss bar.)
Encounter area
The Spire
Chest reward example
1 × Uncommon Chest (A victory with 100% personal damage contribution awarded one Uncommon Chest, automatically added to Inventory.)

Related records

ObjectRelationship to Sentinel PrimeQuantityConditions
The SpireRegional boss—Sentinel Prime's boss bar identifies The Spire as the encounter area.

Sentinel Prime at The Spire

Find Sentinel Prime at The Spire in Iron Harbor. Identify the encounter by the boss bar labeled SENTINEL PRIME, THE SPIRE, and LV 95. Level 95 is the boss’s displayed level.

For other encounter types and their access methods, see the Lanterns boss guide.

Sentinel Prime’s boss bar labeled The Spire and LV 95.

Reach Iron Harbor from Hero City

  1. Fly roughly east from Hero City across Open Ocean toward the Iron Harbor destination marker and its blue-glass high-rises.
  2. Descend from above the buildings. The ENTERING SKYLINE AVENUE prompt identifies the district on this approach.
  3. Continue toward the black-and-white striped lighthouse plaza and harbor side. Coastal cranes help identify the waterfront.

If NEXT QUEST points to Apex Reach, follow Iron Harbor’s own marker and landmarks. The quest distance can increase while you approach Iron Harbor because it tracks a different destination.

These landmarks identify the approach to Iron Harbor; Sentinel Prime’s encounter area is The Spire. Use the location directory for the city’s other landmarks and area levels.

Flying into Skyline Avenue above Iron Harbor’s striped lighthouse and waterfront.

Uncommon Chest Reward and Inventory

One Sentinel Prime victory with 100% personal damage contribution awarded 1 Uncommon Chest, automatically added to Inventory. The 100% describes the contribution for that fight; it is not a requirement to deal all of the boss’s damage.

Press I, select Chests, and choose the chest to view its details. You can leave it stored for later.

For opening and upgrade options, use the chest management guide. To combine this encounter with Plasma Brute in Hero City, follow the two-city boss chest route.

Inventory with an Uncommon Chest selected and Sentinel Prime listed as its source.

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