Borderlands 4 Upper Crust Collectibles: FL4K & Last Resort

This article explains where to find every Upper Crust collectible tied to FL4K and The Last Resort in Borderlands 4—the named locations, the exact items, and how to grab them without backtracking. You’ll get a full checklist for the Upper Crust crew challenges, including the three FL4K-specific targets and the six collectibles hidden in The Last Resort area.

Background: What Are Upper Crust Collectibles?

Upper Crust is a region in Borderlands 4 that serves as the wealthy, gilded district of the planet Kairos. It’s home to the Vault Hunter FL4K’s side missions and the sprawling Last Resort complex—a luxury casino and resort that doubles as a combat arena. Collectibles in this zone fall under the “Crew Challenges� tab, and they count toward the “Upper Crust Collector� achievement. There are three types: Crimson Radio towers, Crimson Army dossiers, and rare weapon trinkets. The FL4K-specific collectibles are tied to a side quest chain that unlocks after you complete the main story mission “A Farewell to Arms.�

How the Collectible System Works

Each collectible in Upper Crust is marked on your map once you get within 150 meters, but only if you’ve activated the nearby Crimson Radio tower. The towers are the first priority—they reveal all other collectibles in their radius. For FL4K’s chain, you need to find three “FL4K’s Memory� data logs, which are audio recordings left by the robot’s former partner. The Last Resort has six collectibles: two Crimson Radio towers, two Crimson Army dossiers, and two weapon trinkets. All of them are missable if you leave the area without grabbing them, so it’s best to collect as you progress through the story.

FL4K-Specific Collectibles: The Three Memory Logs

These logs are part of the side mission “Echoes of the Past,� given by FL4K at the Upper Crust fast travel station. Each log is in a distinct location:

• Log 1 – The Rooftop Garden: On the rooftop of the “Verdant Terraceâ€� building, accessible via a jump pad on the east side. Look for a small table with a glowing red beacon.
• Log 2 – The Server Room: Inside the Last Resort’s main building, lower level, in a locked room. The key is on a nearby dead guard’s body.
• Log 3 – The Helipad: On the helipad at the top of the Last Resort tower, behind a stack of crates. You’ll need to activate a pressure pad to raise the platform.

Once you collect all three, the mission completes and unlocks a unique FL4K skin called “Reclaimed.�

The Last Resort: Full Collectible Checklist

Here’s every collectible in the Last Resort complex, in the order you’ll likely encounter them:

1. Crimson Radio Tower 1: On the balcony of the “Gilded Lounge� near the main entrance. Climb the stairs to the second floor.
2. Crimson Army Dossier 1: In the security office, on a desk next to a computer terminal. The office is behind the casino floor.
3. Weapon Trinket “Golden Dice�: On a shelf in the “High Roller Suite,� accessible after the mission “Double or Nothing.�
4. Crimson Radio Tower 2: On the roof of the maintenance shed, west of the main building. Use the nearby dumpster to jump up.
5. Crimson Army Dossier 2: In the underground parking garage, in a locked trunk of a limousine. The key is on a guard near the elevator.
6. Weapon Trinket “Lucky Charm�: Behind the bar in the “Jackpot Lounge,� on a shelf with other trinkets.

Common Problems and How to Solve Them

Players often miss the two trinkets because they’re not marked on the map until you’re very close. If you’re stuck at 5/6, check the bar area in the Jackpot Lounge—the trinket is hidden behind bottles and easy to overlook. Another issue is the locked server room for FL4K’s second log; if you don’t loot the guard’s body, you’ll have to reload the area to get the key. Finally, the helipad log can be blocked by a glitch where the pressure pad doesn’t activate—fast travel away and back to reset it.

How to Choose the Right Order to Collect

To avoid backtracking, follow this order: first activate both Crimson Radio towers (they reveal the other items), then grab the dossiers and trinkets as you do the main story missions. The FL4K logs can be done after the story, but the rooftop garden log is easiest to grab during the mission “A Farewell to Arms� because you’re already in that area. If you’re a completionist, do the FL4K side quest before leaving Upper Crust for the final time.

Comparison: Upper Crust vs. Other Regions

Upper Crust has fewer collectibles than, say, the Blightlands (which has 12), but it’s more compact, so it takes less time. The main difference is that the Last Resort trinkets are tied to specific missions—if you miss them, you’ll need to replay those missions in True Vault Hunter Mode. Other regions, like the Rustworks, have all collectibles available from the start. So prioritize Upper Crust if you want a quick completion.

Costs and Rewards

There’s no in-game currency cost to collect these items—they’re free. The rewards are cosmetic: the FL4K skin “Reclaimed� and two weapon trinkets that provide a small luck boost (increases rare drop chance by 1% each). Completing all Upper Crust crew challenges also gives you the “Upper Crust Collector� trophy, which is worth 30 Gamerscore on Xbox and a bronze trophy on PlayStation.

Safety and Accuracy Tips

Always save before attempting the helipad log, as the pressure pad can be buggy. For the server room, make sure you loot the guard’s body before leaving the area—if you die and respawn, the key may despawn. Also, note that the trinkets are not tradeable, so you must pick them up with the character you want them on. Finally, verify your collectible count in the pause menu under “Challenges� to ensure you haven’t missed any.

Frequently Asked Questions

Can I get Upper Crust collectibles after the story? Yes, all of them are available in free roam after the main story. The only exception is the trinket in the High Roller Suite, which requires the mission “Double or Nothing� to be active or completed.

Do FL4K’s memory logs count toward the crew challenge? No, they’re part of a side mission, not a crew challenge. They don’t count toward the “Upper Crust Collector� trophy, but they do unlock the skin.

What if I miss a collectible? Can I replay? Yes, you can replay any mission in True Vault Hunter Mode or use the “Reset Missions� option in the menu, but you’ll have to redo the entire story up to that point.

Are the trinkets worth it? The luck boost is minor (1% each), but they’re needed for 100% completion. If you’re hunting legendary drops, every bit helps, but they’re not game-changing.

How do I get the key to the server room? The key is on a dead Crimson Guard near the server room door. If it’s not there, reload the area by fast traveling away and back.

Is there a map that shows all collectibles? Yes, once you activate both Crimson Radio towers, all collectibles appear on your in-game map. You can also use third-party interactive maps online, but the in-game ones are sufficient.

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