Alright, fellow Tenno, gather 'round. Let's talk about one of the most elusive resources in the Origin System: Corrupted Holokeys. I've been grinding these things for what feels like an eternity, and let me tell you, the journey is like trying to find a specific, perfectly ripe berry in a galaxy-sized fruit salad – tedious, often frustrating, but oh-so-satisfying when you finally get what you're after. If you're looking to get your hands on those sweet, sweet Tenet weapons from Ergo Glast, you're gonna need these keys, and I'm here to break down the most efficient ways to farm them in 2025.
First things first, you absolutely need a Railjack. No ifs, ands, or buts. Corrupted Holokeys are exclusive end-of-mission rewards from Empyrean Void Storm missions. The good news? You don't have to scour the map for them; they're guaranteed as a completion reward about 90% of the time from any mission with an active Void Storm. The bad news? The drop amount is stingy. We're talking about a grind that requires the patience of a cephalon waiting for its operator to log back in after a five-year hiatus.

🔥 Best Spots to Farm in 2025
While any Void Storm mission can drop keys, not all are created equal. From my countless hours of piloting the good ol' RJ, I've found the missions on Pluto and Neptune to be the most consistent and efficient for Holokey farming. Here's a quick breakdown:
Recommended Mission Types:
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Skirmish: King of speed. If your Railjack is properly modded (think Particle Ram and strong forward artillery), you can blitz through these.
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Volatile & Orphix: ⚡ Can be fast with a coordinated squad, but often slower than Skirmish.
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Exterminate: 🔫 Solid choice if you prefer ground combat, but the Railjack segment can slow things down.
Why Pluto/Neptune? The level of enemies and mission flow just seems to be optimized for quick completions. Think of it like choosing the express checkout lane at a Corpus supermarket – it's still a line, but it moves faster.
⚙️ Pro-Tips for Efficient Farming
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Kill Two Birds with One Stone: You're in a Void Storm, which means you're cracking Void Relics simultaneously. Don't just focus on the keys! You're farming for:
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Corrupted Holokeys
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Prime Parts
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Endo (from dissolving unwanted rewards)
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Intrinsics
It's a resource buffet!
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Resource Boosters DON'T Work: 🚫 This is crucial. Your resource chance or drop chance boosters, Smeeta Kavat's Charm, nothing affects Holokey drops. Don't waste your plat or time trying to boost them.
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The Sister Bonus: Defeating a Sister of Parvos in a co-op squad grants 1 Corrupted Holokey to every squad member. It's a nice little bonus, but not a reliable farming method.
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Squad Up: A good crew makes everything faster. Have one person dedicated to engineering (repairs/forging), one on artillery/turrets, and others on away teams.
🛒 So, What Are These Keys For?
You're grinding for a reason, right? Corrupted Holokeys are the only currency used to buy Tenet Weapons from Ergo Glast in any Relay. The coolest part? His stock doesn't care about your Syndicate standing. Even if he's sending death squads after you daily, he'll still happily take your keys for his guns. It's a business relationship as stable as a Grineer's aim – purely transactional.
Here's the deal with Glast's shop (2025 status):
| What You Need to Know | The Details |
|---|---|
| Cost | 40 Corrupted Holokeys per weapon 💰 |
| Progenitor Bonus | Random damage type (e.g., Toxin, Heat) & random % increase. |
| Stock Rotation | The bonus type and % change every 4 days. 🔄 |
| Purchase Limit | Only 1 weapon per Progenitor cycle. Plan your buys! |
| MR Lock | Yes, each weapon has a Mastery Rank requirement. |
💭 Final Thoughts & The Grind Mindset
Let's be real. Farming Corrupted Holokeys is a marathon, not a sprint. You'll need hundreds to collect all the Tenet weapons. My advice? Don't burn out. Mix it up. Run a few Void Storms, then go do something else in the game. The process is like terraforming a dead moon – progress is incremental and barely noticeable hour by hour, but look back after a week and you'll see real change.
Remember, you're not just farming keys. You're building your Prime collection, stocking up on Endo, and leveling your Intrinsics. Frame the grind as a multi-layered win. Gear up your Railjack, squad up with some friends (or brave randoms), and dive into the Void Storms. That Tenet Arca Plasmor is waiting, and it's glorious. Good luck out there, Tenno! May your drops be generous and your Railjack hull remain intact. ✨