Borderlands 4 Items carries on the series’ tradition of combining outrageous gunplay with treasure-hunting adventures across massive zones. Vaults remain the pinnacle encounters: challenging dungeons sealed behind fragment hunts and boss fights. The Terminus Range Vault, also called the Arch of Origo, is one of the most dramatic. Perched in icy peaks and snowy ravines, this vault asks you to gather three fragments scattered across the subzones of Terminus Range, solve some platforming puzzles, and take down a boss that wields elemental fury.

For many players, this vault will be their toughest yet when they reach it. It tests not only your combat readiness but also your navigation skills, as grappling points and gliding jumps become central. To help you survive, this walkthrough will guide you from fragment collection all the way to claiming your reward.

Preparing for the Vault

Before heading out, make sure your character is properly leveled. Terminus Range is not an early-game area, so expect enemies in the mid- to high-level range. Shields with high elemental resistance are particularly useful here, as the vault boss cycles through fire and ice attacks. Weapons with shock or kinetic damage can give you a strong advantage, especially against shielded enemies. Finally, stock up on ammo and ensure you’ve unlocked enough safehouses in the region for fast travel—this will save you time when hopping between fragment locations.

The Three Vault Key Fragments

The Terminus Range Vault requires three fragments to open. These are hidden across Cuspid Climb, Windspear, and The Low Leys. Each location tests different aspects of exploration, from vertical movement to sneaking into enemy strongholds.

Cuspid Climb

Your first fragment lies in Cuspid Climb, a treacherous stretch of cliffs and icy outcroppings. From the Grey Havenage or nearby safehouse, head east toward The Gordello. Stick to the northern path, which keeps you high up in the mountains. Soon you’ll spot a grapple structure rising above the path. Use your grappling gear to latch on and swing upward. From here, follow a series of jumps and glides across narrow ledges until you reach a hidden cave. Inside is the fragment, resting on a pedestal. This one can be frustrating if you misjudge your jumps, so take your time lining up glides and don’t hesitate to use your shield skills to mitigate fall damage.

Windspear

The second fragment is hidden inside an Order facility in Windspear. Fast travel to the Nightcap Safehouse and move toward the enemy base that looms in the distance. As you enter, expect stiff resistance from Order soldiers and turrets. Fight your way inside, then search for the control room marked by glowing consoles and red lights. On a crate in the back corner lies the fragment. Compared to Cuspid Climb, this piece is less about platforming and more about brute force. Clear the enemies carefully before grabbing the fragment to avoid being overwhelmed during looting.

The Low Leys

The final fragment sits within The Low Leys, a desolate region scarred by rocky ravines. From Snowy Wells Safehouse, make your way east toward the Pit, an area known for its strange formations. Look for a cliff wall near a water tower—there should be a grapple point fixed to the rock. Use it to hoist yourself up, then climb a few more ledges until you spot the fragment perched on a concrete pillar. This one is straightforward but requires keen eyes to spot the grapple anchor. Once claimed, you will have all three pieces needed to unlock the vault.

Reaching the Vault Entrance

With the three fragments in your inventory, you’ll now be guided to the vault’s resting place. The Arch of Origo lies at the border between Cuspid Climb and The Low Leys. Fast travel to either the Heritage Opus or Nightcap safehouses, then follow the main road into The Low Leys. Cross a wooden bridge spanning a ravine and look left—there will be a gap leading to a ledge on the far side. Glide across, then enter a cave mouth shrouded in frost. Inside lies the shrine where your fragments are combined, opening the way into the vault.

This moment feels weighty: the swirling energy of the fragments awakens the vault, and the gates of Origo grind open. Stock up on ammo from the vending machines near the entrance, because once you step inside, the real challenge begins.

Inside the Arch of Origo

The vault interior is grand, with towering statues and glowing crystal veins. At its heart waits the guardian boss, Origo, a massive creature tied to elemental chaos. As you step into the arena, the ground quakes and Origo emerges, its wings unfolding in an eruption of cold mist and searing flames.

The Boss Fight: Origo

Origo is a two-phase fight, shifting between ice and fire forms. Each phase demands mobility and awareness, as standing still will almost guarantee your defeat.

Phase One: The Frozen Assault

In its initial state, Origo focuses on cold-based attacks. It sweeps the ground with icy breath that slows your movement and leaves frost patches. These patches drain shields quickly, so never remain inside them. Origo also summons icicles from above that crash down with splash damage. Keep moving in wide circles around the arena to minimize hits, and use shock weapons to chip away at its double-layered shield.

Occasionally, Origo takes to the air. During these moments, glowing currents of wind appear in the arena. Use them to glide upward, giving you both a defensive option against floor-wide frost blasts and a chance to shoot Origo midair.

Phase Two: The Infernal Barrage

Once its shield drops, Origo roars and ignites in flames, switching to fire attacks. It spews incendiary sprays across the ground, leaving behind burning patches. At this stage, its icicle attacks are replaced by fireballs that track your last position. Again, keep moving and use cover when possible.

The most dangerous move in this phase is when the entire arena floor ignites. At this point, the only safe option is to ride the wind currents into the air and glide until the flames recede. Failing to do so will melt your health bar almost instantly.

Throughout both phases, Origo summons small creatures called Kratch, which dive-bomb you. While not individually dangerous, they distract you at critical moments. Quickly dispatch them with area-of-effect weapons before returning focus to Origo.

Strategies for Success

The key to victory is adaptability. Equip weapons that deal shock or kinetic damage for the shield phase, then switch to high-damage fire-resistant gear once Origo’s health bar is exposed. Skills that enhance mobility—like dashes, double jumps, or glide extensions—will make dodging hazards much easier.

Try not to burn through all your ammo early. The fight is lengthy, and conserving resources ensures you can keep pressure on Origo without being forced into melee desperation. Finally, learn the timing of Origo’s big attacks. Once you know when the floor will freeze or ignite, you can position yourself near a wind current in advance, gliding at just the right moment.

The Rewards

Defeating Origo feels triumphant, but the real payoff comes from the loot. Inside the vault chest, you’ll receive the Glide Pack upgrade: Regen Delay Reduced, a key piece of mobility gear. This reduces the delay before your glide pack regenerates, allowing you to chain more aerial maneuvers together. Considering how vital gliding is in Terminus Range and beyond, this upgrade can drastically improve your survivability in exploration and combat.

Alongside the upgrade, expect randomized legendary gear, rare weapons, and shields. Many players return to the vault for repeat fights to farm Origo’s loot pool, which leans toward elemental weaponry that complements the boss’s dual nature.

Closing Thoughts

The Terminus Range Vault is more than just another dungeon; it’s a culmination of the region’s themes. From platforming across icy cliffs to battling through fire and frost in the final arena, the Arch of Origo is designed to test everything you’ve learned up to buy Borderlands 4 Items. The fight against Origo is memorable not only for its spectacle but also for its demands on player skill, rewarding preparation, mobility, and clever use of gear.