ARC Raiders ESR Analyzer quest — how to search Buried City pharmacies
Arc RaidersWhere it fits in the quest chain, what “in one round” means, and the rewards you get for finding the device.
| Quest | Given by | Where | Objective | Rewards | Quest chain |
|---|---|---|---|---|---|
| ESR Analyzer | Lance | Buried City | In one round: search for an ESR Analyzer inside any pharmacy in Buried City | Tempest I (x1), 33,000 XP | Previous: The Control Tower • Next: Raider Versus Rocketeer |
What the ESR Analyzer quest asks you to do
ESR Analyzer is a simple, focused objective: enter Buried City and find an ESR Analyzer inside a pharmacy before your run ends. The requirement is explicit about the time constraint — it has to be completed in a single round.
The item itself is a specialized medical device for analyzing erythrocyte sedimentation rates, but for the purpose of the quest, you only need to locate one inside a qualifying shop.

How to start and where it sits in the chain
The quest comes from Lance. In the broader progression, it follows The Control Tower and leads into Raider Versus Rocketeer. If you’re tackling quests in order, pick this up from Lance after you finish The Control Tower.

Quick summary: finding the ESR Analyzer in Buried City
- Accept ESR Analyzer from Lance.
- Deploy to Buried City.
- Enter any pharmacy and search inside for the ESR Analyzer device. The objective counts in any pharmacy within Buried City.
- Complete the round once the item is found. If your in-game tracker also lists a delivery step to Lance, return it to him before ending your run.
What counts as a pharmacy
Pharmacies are retail medical shops in Buried City. You’re looking for a store interior rather than a clinic wing or hospital floor. If a particular storefront is blocked or inaccessible during your run, move on and check another pharmacy — the quest recognizes any of them.

“In one round” requirements
The “in one round” language means you need to complete the search during a single excursion. Treat it as a time-bound task: get into Buried City, hit a pharmacy, and find the device before the round concludes. If you don’t complete the objective within that run, plan to reattempt it on your next deployment.
Rewards and what unlocks next
Finishing ESR Analyzer grants Tempest I (1) and 33,000 XP. Completing it advances your questline to Raider Versus Rocketeer. Keep an eye on your log after you turn this in so you can pick up the next step without delay.

Notes on in‑game variations
In some builds, the quest log may also show a follow‑up step to deliver the ESR Analyzer to Lance after you locate it, and reward text can differ. If your tracker includes a delivery sub‑objective, make sure to hand the device to Lance within the same run before you wrap up.
If you’re stuck, refocus on the basics the objective spells out: Buried City only, pharmacies only, complete it within one round. Once you’ve got the device, you’re immediately on to the next assignment in the chain.
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