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OD Project - Reconstruction HQ III is an Exploration Mission found in Valley IV in Arknights: Endfield 1.0. Check out how to unlock this mission, its walkthrough, and all its rewards in this guide!

You can unlock OD Project - Reconstruction HQ III by completing the previous mission OD Project - Reconstruction HQ II and viewing Crowe's message.
OD Project - Reconstruction HQ II Guide

Open up Baker and view Crowe's message to you. He asks if you could swing by to complete the reconstruction.

Go to the Reconstruction Headquarters in Power Plateau. Head east of the headquarters and find Crowe with Ardelia. Crowe shares his idea of wanting Dean and Clavell acting on their own.

Go to the Evacuation Zone and find Dean and Clavell. You help them after a mechanical failure occurred on a surveillance unit.

Interact with the surveillance unit and repair its Originium circuitry. Place the components on the correct positions to match the number of grids needed.

After repairing the surveillance unit, a Tunneling Nidwyrm suddenly appears nearby. Defeat them to avoid incoming danger.

Return to the two apprentices and they will tell you that there is a new issue. You help them out with the contaminated samples.

Interact with the unit to automatically place the samples inside. Suddenly, more Tunneling Nidwyrms appear from the ground.

Defeat both Tunneling Nidwyrms to avoid getting the device damaged. Return to the apprentices again after defeating the enemies.

The two are thankful that the device isn't damaged. The samples seem to be effective, and you head back to the headquarters.

Return to the Reconstruction Headquarters and look for Clavell and Dean arguing. Crowe shows up to give them a harsh lesson. Everyone agrees to activate the large geological probe together.
| Total Quest Rewards |
Oroberyl x50 |
|---|
By completing the mission, you will also be rewarded with 200 Operational EXP.
| Mission Type | Exploration Mission |
|---|---|
| Location | Valley IV, Power Plateau |
OD Project - Reconstruction HQ III is an Exploration Mission that's located in Power Plateau. This mission can be unlocked after completing OD Project - Reconstruction HQ II.

OD Project - Reconstruction HQ III Mission Guide



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