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Had to Be Done is an Exploration Mission found in Valley IV in Arknights: Endfield 1.0. See how to solve the main switch puzzle and how to switch on the production system power mains, a full walkthrough, and all mission rewards in this guide!

You can start Had to Be Done by speaking to Vallia in the Originium Byproduct Processing Center after reaching Authority Level 15.
How to Level Up Fast - Authority Level Guide

You'll need to supply power to the nearby Energy Nexus to open the gate. Find the closest Relay Tower you have that's supplied with power and connect the transmission line to the Energy Nexus.

You can start placing new relay towers connecting from your original factory in the Core AIC Area all the way to the Originium BPPC Building to supply power to the Energy Nexus.
The shortest route is through the large building just south of the Core AIC Area, although you can also place relay towers through the main road if you wish to power the other surrounding areas.

Once the energy nexus is powered, open the door and enter the building to check the situation within and a short cutscene will play.

You'll need to reactivate the main switch to power the facility. You can speak to Vallia for clues on how to solve the puzzle.
| How to Solve the Main Switch Puzzle | |
|---|---|
| 1 | ![]() Grab the tall Drop Crate and place it near the elevated platform where one of the smaller drop crates is located. Use it to hop up the platform so you can grab the small Drop Crate and push it to the ground. |
| 2 | ![]() Drag the small Drop Crate over to the pad on the floor in front of a locked door. This will open a small room where you can grab another tall Drop Crate. |
| 3 | ![]() Place the tall Drop Crate on the pad next to a tall glass structure. |
| 4 | ![]() Place the other tall Drop Crate on the pad next to another tall glass structure. |
| 5 | ![]() Place the small Drop Crate on the remaining pad to re-activate the main switch. |

After the short cutscene, speak to Vallia again and he'll ask you toc heck the second floor of the building.
Call down the elevator on the north side of the room and make your way up. Follow the path to the other side and enter the room for a short cutscene.

You need to rotate the power mains so that all three sections will face towards you which will cause them to extend an orange conveyor belt.
| How to Solve the Power Mains Puzzle | |
|---|---|
| 1 | ![]() Keep pressing the right panel to rotate the top section until it faces towards you and extends its conveyor belt. The top section always moves independently from the other sections. |
| 2 | ![]() Keep pressing the middle panel until the bottom section faces towards you and extends its conveyer belt. |
| 3 | ![]() Keep pressing the left panel until the middle section faces towards you and extends its conveyer belt, which solves the puzzle. |

Head down the ground floor and speak to Vallia for a short cutscene which also ends the quest.
| Total Quest Rewards |
T-Creds x4250 |
Oroberyl x75 |
|---|---|---|
Arms INSP Kit x14 |
||
You also receive 300 Operational EXP for completing this quest.
| Mission Type | Exploration Mission |
|---|---|
| Chapter | Chapter 1 - Process 2 |
| Location | Valley IV, The Hub |
Had to Be Done is a Exploration Mission that's located in The Hub and unlocks after reaching Authority Level 15.

| All Exploration Missions | ||
|---|---|---|
| Defense Construction | Depot Node II | Savior of Bots |
| Depot Node I | Base Revisited [Finale] | Dijiang Upgrade and Maintenance I |
| Etchspace Salvage | Cog in the Wheel | Beyond the Worlds' Expanse I |
| In For a Penny, In For a Pound | A Brewing Storm - The Hub | Alluvial Cleaning |
| Where Art Thou My Love | Produce Industrial Explosives | Farming Toils |
| OD Project - Infra-Station I | Outpost Infra-Station | Dispatch Reboot |
| Had to Be Done | Tripod Central | Restart Area Stock Redistribution I |
| Restart Area Stock Redistribution II | AIC Steward | Dijiang Upgrade and Maintenance II |
| Morale Booster | OD Project: Refugee Camp I | OD Project - Refugee Camp II |
Had to Be Done Mission Guide

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