ARC Raiders All Keys and Door Locations: Complete Keycard Guide

Keys in ARC Raiders are small, rare, and easy to waste when a room description is vague. This CFNBoost guide turns the current keycard pool into a practical map-by-map reference, then adds a simple decision system for when to use a key, when to keep it in a safe pocket, and how to survive the room after the lock opens.

ARC Raiders Keys Quick Summary

There are 21 known keys and access cards spread across the five original maps, with several doors inside high-traffic landmarks.
Keys are random drops and do not stack, so carry only the keys that match the route you can realistically complete.
Purple or Epic keys usually have a better chance at blueprints and valuable loot, while green keys can still deliver useful materials and upgrades.
Night Raids and major map conditions can improve the value of a locked room, but they also make the approach more dangerous.
Open the door from cover, listen for campers, and leave after the key has paid for itself instead of forcing every nearby room.

The tables below use landmark names as navigation anchors. The final approach can change with spawns and lobby pressure, so use the map, audio cues, and extraction plan together instead of running directly through the most obvious entrance.

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Keys and Door Priorities at a Glance

Best keys by goal

Goal	Strong options	Why
Best loot ceiling	Stella Montis Archives, Buried City Town Hall	Large rooms with weapons, trinkets, materials, and blueprint chances.
High-risk PvP reward	Dam Control Tower, Spaceport Control Tower, Blue Gate Confiscation Room	Excellent loot, but entrances and exits are easy to contest.
Safer solo value	Buried City Hospital, Blue Gate Cellar, Spaceport Warehouse	Clear landmarks with cover and a more manageable rotation.
Weapon-focused run	Blue Gate Cellar, Dam Control Tower, Spaceport Trench Towers	Good chance to find weapons or a full building of loot.
Night Raid value	Stella Montis Archives, Spaceport Warehouse, any high-tier key room	Map conditions can improve loot quality, but increase pressure.

How Keys Work

Keys are random drops. A locked zone is not guaranteed to contain a key, and a key room is not guaranteed to pay out every time. Keys are single-use and occupy a full inventory slot, so the right question is not “can I open this?” but “can this raid safely convert the key into an upgrade?”

Key rules

Rule	Practical meaning
Random drop	Loot containers across the map; do not expect a key from one named zone.
Single-use	The key is consumed when the door opens, so preview the route before inserting it.
No stacking	Keys compete with materials and weapons for inventory space.
Rarity matters	Higher rarity usually means better loot odds, not a guaranteed blueprint.
Door risk	The room can be camped, trapped, or already looted by another player.
Map condition bonus	Night Raids and major modifiers can improve value while raising the danger.

Dam Battlegrounds Key Locations

Dam keys reward players who understand the building layout. The Control Tower is the headline target, but the quieter rooms can be more efficient when the lobby is busy. Approach from cover and keep a second extraction route in mind before entering a building with one obvious exit.

Dam keycard rooms

Key	Door location	Loot and risk
Dam Surveillance Key	Water Treatment Control	Useful materials and a chance at a weapon case; watch the alarm gate.
Dam Staff Room Key	Research & Administration	Staff and medical/trinket loot; the building has several guarded approaches.
Dam Testing Annex Key	Testing Annex	Two ground-floor doors; popular location with campers near the roof and extraction.
Dam Control Tower Key	Control Tower	Rare materials, weapons, and a possible security locker; one exit is frequently watched.

Place the key in a safe pocket before crossing the final open lane.
Scan windows, rooftops, and rappel shafts before interacting with the door.
Use mines or another warning tool when the room has only one exit.
Loot the room and one adjacent fallback area, then rotate instead of holding the building.

Buried City Key Locations

Buried City has several strong interior rooms. The Town Hall offers the biggest volume, while the Hospital and Grandioso Apartments are easier to understand on a first key run. Clear the building around the door before you spend the card; a locked room is rarely worth opening while another squad is already inside the landmark.

Buried City keycard rooms

Key	Door location	Loot and risk
Buried City Hospital Key	Hospital	Medical loot and a guarded interior near the Library entrance.
JKV Employee Access Card	Space Travel, fourth floor	Weapons and weapon mods in a surprisingly strong green-key room.
Residential Master Key	Grandioso Apartments or Main Street	Two possible uses; Grandioso has trinkets, nature loot, and weapons.
Buried City Town Hall Key	Town Hall	Unlocks a whole building with a large loot volume; central PvP is common.

Blue Gate Key Locations

Blue Gate has a mix of reliable rooms, puzzle-adjacent doors, and high-traffic underground areas. The Cellar west of Ruined Homestead is a strong value pick for a quieter run, while the Confiscation Room can pay out but demands a combat-ready approach.

Blue Gate keycard rooms

Key	Door location	Loot and risk
Communication Tower Key	Pilgrim’s Peak	Electrical loot on the ground floor; popular area with modest room value.
Confiscation Room Key	Security Wing	Epic room underground with strong loot and heavy PvP pressure.
Village Key	Village	Quiet room with limited loot and a possible weapon case.
Cellar Key	West of Ruined Homestead	Weapons, blueprints, grenades, and healing items with fewer camping spots.
Patrol Car Key	Traffic Tunnel	Opens an armored vehicle; exposed tunnel with limited loot but useful weapon farming.

Spaceport Key Locations

Spaceport key rooms are concentrated around vertical structures and warehouses. The Trench Towers can unlock an entire building, while Control Tower A6 is a high-reward route that is safest when your squad has mines, cover, and a clear extraction call.

Spaceport keycard rooms

Key	Door location	Loot and risk
Trench Tower Key	North or South Trench Tower	Two possible doors and a large building full of loot; ziplines can reveal an approach.
Container Storage Key	Container Storage	Upper-floor room with multiple attack angles; check whether the area is already looted.
Control Tower Key	Control Tower A6	Excellent loot and roof access; rappel shaft and PvP make it a high-risk play.
Warehouse Key	Shipping Warehouse	Second-floor room and a calmer early rotation; especially useful during a Night Raid.

Stella Montis Key Locations

Stella Montis has fewer rooms, but the best doors can be extremely profitable. Archives is the premium blueprint and trinket target, while Assembly and Lobby are more contested because player routes naturally converge there.

Stella Montis keycard rooms

Key	Door location	Loot and risk
Archives Key	Cultural Archives storage room	High density of trinkets, grenades, weapons, and blueprint chances.
Assembly Admin Key	Central Corridor	Worth opening, but the Assembly is populated throughout the raid.
Medical Storage Key	Medical Research	Medical loot in a PvP-active location with dangerous ARC pressure.
Security Checkpoint Key	Lobby	Guns, gun mods, and parts; the stairs and bridge create easy grenade angles.