Halo Infinite players are in for a treat starting January 17. A free event pass has been announced for the sci-fi FPS title, with the pass being available to upgrade and earn from until the end of the month on the 31st.

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One of the highlights of this free pass is JFO-Class armor, a fan favorite among those who’ve played throughout the franchise’s history.

With the pass only being 10 tiers in size, it’s not as huge as the game’s regular battle passes, though you only have a couple of weeks to earn the rewards. Unlike battle passes, event passes such as this one don’t actually stay around after the event ends, so you’ve got a limited time to claim as much as you can.

Halo Infinite is currently available on Xbox One, Xbox Series X|S, PC, and Xbox Cloud Gaming. If you’re looking to try out the shooter on your PC, check out our PC review of the game. We gave the game an 8.5/10, with this verdict: “All in all, Halo Infinite is a worthy entry to this legendary franchise. That is an achievement by itself. But what I really appreciated is the fact that 343 took risks. These risks are things that could have completely soured the experience and turned away even the most diehard fans of the franchise. In the end though, those risks paid off. Infinite is in my opinion, 343’s best Halo title yet, and I couldn’t be more excited to see where it goes from here.”