If you're looking for all the Mjolnir Armory locations in Halo Infinite campaign, you've come to the right place. We've put together a handy map with our friends at MapGenie to help you get exactly what you're after: cosmetic unlocks.
Mjolnir Armories are small lockers you can find throughout the Halo Infinite map that offer you new ways to customise your Spartan in multiplayer mode. They're pretty easy to spot so don't worry too much about it - they're lit up in green most of the time.
Here's a fully interactive map of all 34 Mjolnir Armories on Zeta Halo:
You can get all kinds of good stuff with Mjolnir Armories, from various stances and nameplates to full-on weapon coatings to spruce up your Halo Infinite guns in multiplayer.
Of course, some of these are trickier to get to than others. The Mjolnir Armory at The Tower is a particular doozy - if you select it the waypoint won't take you to the exact right place. Instead, the game tries to send you grappling all the way to the top of the building. To be fair, this is where you can find one of your first Halo Infinite skulls, but you need to go elsewhere for the Armory.
Anyway, why not look for more stuff around Zeta Halo? For completionists, we have a handy guide for all collectables in Halo Infinite, and if you're looking specifically for Spartan Cores, we have a map for that too.