What to know
- The Residential Master Key can be found mainly in loot containers on the Buried City and Dam Battleground maps, especially in buildings like Ruby Residence and Research & Administration.
- It is a random drop and requires searching desks, drawers, and cabinets thoroughly.
- The key unlocks a secret door in the Grandioso Apartment on the Buried City map, giving access to a loot room.
- Loot from the unlocked door includes medium, heavy, shotgun, and light ammo, healing items, crafting materials, grenades, and the Tempest I epic assault rifle.
Arc Raiders players seeking the Residential Master Key must prepare for some thorough searching across specific locations on the Buried City and nearby Dam Battleground maps. The key is essential for unlocking a hidden room inside the Grandioso Apartment to access high-value loot, making it a prize worth the hunt.
Where to find the Residential Master Key in Arc Raiders
The key spawns randomly in loot containers. On the Dam Battleground map, it is notably found inside the Ruby Residence building located:
- Towards the north-eastern side of the map
- East of the Hydroponic Dome Complex
- In front of the Pale Apartments
Search the second floor's computer desks for a chance to obtain it. Other apartments, like the Research and Administration building, also hold chances for the key to appear. Players are advised to patrol multiple apartments to increase their likelihood of finding it.
Similarly, on the Buried City map, the key is found in loot containers scattered around residential buildings, especially within drawers and cabinets. Players need to comb through these thoroughly to find it as it does not spawn at a fixed point.
What the Residential Master Key unlocks
You use the key on the Buried City map at the Grandioso Apartment, situated east of the Town Hall. You can enter this building through a large broken window and then turn left to locate the locked door that the Residential Master Key opens.
Unlocking this door reveals a room packed with valuable loot items, making it a crucial objective for survival and combat upgrades.
Notable loot and rewards found inside the unlocked room
Inside the unlocked room in Grandioso Apartment, players find a generous assortment of supplies and weapons:
| Loot item | Details |
|---|---|
| Medium ammo | Ammunition for mid-range weapons |
| Heavy ammo | Ammunition for heavy weapons |
| Shotgun ammo | Ammunition for shotguns |
| Light ammo | Ammunition for light firearms |
| Shield recharge | Used to restore shield points |
| Bandage | Basic healing item |
| Antiseptic | Healing item for wounds or infections |
| Herbal bandage | Healing item made from natural materials |
| Fabric | Common crafting material |
| Kettle I | Crafting component |
| Snap blast grenade | Explosive throwable weapon |
| Bicycle pump | Crafting or utility item |
| Tempest I | Epic-tier fully automatic assault rifle with a good fire rate, best for close combat |
Usage limitations and strategic advice
- The Residential Master Key can only be used once per key found, after which a new key must be located to open other locked doors.
- The Grandioso Apartment is patrolled by the AI enemy Arc, so caution is advised when entering.
- Searching the Dam Battleground's Ruby Residence and Research & Administration buildings first is recommended to find the key before heading to Buried City.
- Managing inventory space is critical as the loot room offers various items that can quickly fill inventory slots .
The Residential Master Key is a valuable item for players aiming to gain upper hand in Arc Raiders by accessing secret loot areas in Buried City. Its random spawn nature adds a challenge, making exploration and persistence key. Unlocking the door at Grandioso Apartment rewards players with essential ammo, medical supplies, crafting materials, and a standout epic assault rifle, which can significantly boost survival and combat effectiveness in the game.
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