
The Stella Montis map in ARC Raiders has several locked security rooms containing valuable, late-game items. The Assembly Admin Key is particularly tricky to use. This guide provides a simple walkthrough showing you precisely where to use the key, what rewards are inside, and how to get around the upper level of the room.
How to Reach the Assembly Admin Door
Head to the Assembly sector, located on the north side of Stella Montis. This area has different levels, so be sure to stay on the main ground level – avoid going down into the tunnels.

Continue down the main path until you see a locked maintenance room on the right side of the corridor. You’ll need the Stella Montis Assembly Admin Key to open it.

This is the first room you’ll need to access. Use the panel next to the door to unlock it. You can check if you’re in the right place by looking through the strong window outside. To the left of the window, you’ll find signs directing you to the Loading Bay and Medical Research areas.

Why the Second Door Matters
The first room you enter isn’t much to look at – just some crates and supplies. However, don’t head back yet. There’s a staircase leading up to another locked room, and you’ll need the Assembly Admin Key to get in.

You’ll generally find better loot on the upper levels of the map, including more valuable crafting components. Since the map is brand new, though, it’s still unclear exactly what items will drop where.
Final Thoughts
Stella Montis can feel confusing and intimidating at first, but once you get the Assembly area key, it’s a great place to find valuable gear. The locked rooms contain items you can’t find anywhere else, so it’s always worth a visit when you get the key. Be sure to check your key regularly, explore every room, and don’t leave Stella Montis without grabbing the loot hidden behind those locked doors.
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2025-11-17 17:06