Arc Raiders Last Entry Quest Guide: Seed Vault Steps, Key, Power Cell, and Shutdown Document
Learn the exact Seed Vault route, where to grab the key and power cell, how to unlock the seed box, and what you must extract with to finish Last Entry.
Overview
Arc Raiders “Last Entry” Quest Overview
“Last Entry” is a quest in Arc Raiders that takes place entirely on the Stella Montis map and centers around accessing the Seed Vault, retrieving a specific document, and successfully extracting with it. The objective chain is straightforward, but it’s easy to miss the key interaction points inside the vault complex—especially the key, the power cell, and the seed box you must unlock.
This guide walks you through the full sequence in a clean, repeatable order: reach the Seed Vault, access the researcher’s log, collect the key from the suit, locate a power cell to open the vault, clear threats inside, unlock the seed box, and extract with the shutdown document to complete the mission.
Step 1: Reach the Seed Vault on Stella Montis
Start by making your way to the Seed Vault area on Stella Montis. The quest steps that matter begin once you’re at the main Seed Vault entry door and the immediate interior spaces around it.
As you approach, slow down and scan the entry route: this location can attract combat, and you’ll want to minimize time spent standing still while interacting with objects.
Step 2: Access the Researcher’s Log at the Mainframe
Once you’re at the Seed Vault entry, head up the steps above the main Seed Vault entry door. Near the top, you’ll find a computer mainframe. Interact with it to access the researcher’s log when prompted.
- Where: Up the steps above the Seed Vault entry door
- What to do: Interact with the mainframe to trigger the log access prompt
- Why it matters: This is a required quest interaction that sets up the next objective items nearby
Step 3: Find the Key in the Hanging Suit Room
After accessing the log, look for a room a short distance past the mainframe on your left. Go inside and you’ll see a hanging suit (often described as a space suit or bio suit).
Search the suit. A key will drop out—pick it up immediately.
- Room location: Just past the mainframe, left side
- Interactable: Hanging suit
- Loot: Key (drops to the floor when searched)
Tip: Don’t assume the key auto-loots. If you search the suit during pressure, it’s easy to forget to grab the dropped key off the ground.
Step 4: Locate a Power Cell to Open the Seed Vault
Before you can open the Seed Vault door, you need a power cell to insert into the door’s battery slot. In many runs, a power cell can be found very close to the key room—sometimes even in the same room or an adjacent one—but its exact spot can vary.
Search the immediate area thoroughly:
- Check the key room floor and corners
- Check the next room over and nearby shelves/edges
- Do a quick sweep before committing to a longer search route
Once you have the power cell, carry it to the Seed Vault door and insert it into the battery slot. This will allow you to open the vault and proceed.
Step 5: Enter the Vault and Deal with Sentry Guns
After the door opens and you enter the Seed Vault, be prepared for automated defenses. There may be sentry guns inside, and they can punish you while you’re trying to interact with the quest objective.
Handle the room in a safe order:
- Identify sentry positions as soon as you step in
- Remove immediate threats before standing still to interact
- Use cover and avoid long open angles while repositioning
You don’t need to fully “clear” every corner for the quest, but you do need enough breathing room to approach the central objective and complete multiple interactions without being forced off it.
Step 6: Unlock the Seed Box (Terminal) with the Key
In the middle of the Seed Vault room, look for a seed box that resembles a computer terminal. This is the quest object that requires the key you picked up from the hanging suit.
Approach the seed box and use the key to unlock it when prompted.
- Object: Seed box / terminal-like container
- Requirement: Key from the hanging suit
- Location: Central area of the vault (often near/under a sentry gun position)
Step 7: Search the Seed Box Again to Obtain the Shutdown Document
After unlocking the seed box, you must search it again. The second search causes the quest item to drop: an official shutdown document.
Pick it up—this is a lootable extraction item, meaning the quest only completes if you successfully extract while carrying it.
- Critical detail: Unlocking isn’t the final step—search it again to make the document drop
- Quest item: Official shutdown document
- Failure state: If you die or fail to extract, you’ll need to repeat the retrieval
If you have a secure storage option (often called a safe pocket), place the shutdown document there to reduce the risk of losing it before extraction.
Step 8: Extract Successfully and Turn In at Spironza
Once the shutdown document is in your inventory, prioritize extraction. Avoid unnecessary fights and take the safest route available.
After extracting, return to Spironza to complete the mission turn-in. If you extracted with the document, the quest should finalize upon return.
Common Mistakes to Avoid
- Skipping the mainframe interaction: Make sure you actually access the researcher’s log before hunting the rest.
- Forgetting to pick up the dropped key: It falls out of the suit—double-check the floor.
- Not realizing the seed box needs two interactions: Unlock first, then search again to spawn the shutdown document.
- Ignoring sentry guns: They can force you off the objective mid-interaction and waste time.
- Loot-greed after getting the document: Treat it like a high-priority extraction item and leave.
Frequently Asked Questions
Where is the key for Last Entry in Arc Raiders?
The key is found by searching the hanging suit in the room just past the mainframe on the left side of the Seed Vault entry area.
Do I always find the power cell in the same place?
No. It’s often nearby (sometimes in or near the key room), but the exact placement can vary, so do a quick sweep of the immediate rooms around the Seed Vault entry.
What do I do after unlocking the seed box?
Search the seed box again. The second interaction drops the official shutdown document you must pick up.
Do I have to extract with the shutdown document?
Yes. It’s a lootable quest item, and the mission only completes after a successful extraction and returning to Spironza.
What’s the safest way to finish once I have the document?
Secure it if possible, avoid extra fights, and head directly to extraction. The longer you stay, the higher the risk of losing the item.
