The introduction of the Sisters of Parvos update brought a wave of excitement to Warframe—finally, Corpus Liches emerged from the shadows, brandishing an arsenal of devastating Tenet weapons that rival the Kuva Lich armory. Fast forward to 2026, and these guns and blades remain some of the most coveted tools for any Tenno who wants to dominate Steel Path or farm Acolytes with style. Unlike Kuva weapons, obtaining a Tenet set isn't always about hunting down a high-level Lich; some of the best options are hiding in plain sight at Ergo Glast’s shop, waiting for a few Corrupted Holokeys. Every Tenet weapon carries a progenitor bonus, infusing each bullet or swing with an elemental flavor, but not all are created equal. Below, we’ll sift through the chaff and highlight the diamonds—starting with the ones that might look shiny but make you wish you had stuck with your trusty Braton Prime.

The Tenet Livia is a paradox wrapped in a two-handed Nikana. Statistically, it’s a beast: 247.5 base damage leaning heavily into Slash, outstanding critical and status chances, and a block angle so generous it could stop a meteor shower. Yet, picking up the Livia feels like trying to conduct an orchestra with a sledgehammer. The Wise Razor stance turns every combo into an awkward dance, the kind where you accidentally step on your partner’s toes every two seconds. Clunky animations prevent you from unleashing the full potential of its Slash procs, so until Digital Extremes gifts this archetype a new stance, the Livia sits in the corner, a beautifully forged blade that nobody wants to wield. If you see it in Ergo’s rotation, walk away unless you collect disappointment.

Moving slightly up the ladder, the Tenet Exec stomps onto the battlefield like a heavyweight boxer who forgot his gloves. As a heavy blade, it packs a solid punch, but its signature move—slamming shockwaves that ragdoll enemies—feels like a party trick after you’ve already beaten a room full of Grineer. Those shockwaves can only be boosted by a handful of niche mods, leaving the Exec heavily reliant on Impact damage, which is about as effective against armor as throwing marshmallows at a tank. Next to the Gram Prime’s bleeding Slash procs, the Exec is the reliable but uninspired friend who always orders the same meal. Fans of colossal swords might enjoy it, but anyone with a Galatine Prime already has a better date to the prom.

The Tenet Flux Rifle is where things get interesting, albeit in a slightly confused way. Instead of reviving the beam-weapon glory days, Digital Extremes turned it into a Corpus Karak—a bullet hose that spits out 15 rounds a second, each carrying a 26% status chance. With the right build and the Flux Overdrive mod, this gun coats enemies in so many Slash procs that it looks like a confetti cannon of agony. It’s effective, no doubt, but it’s also a bit like going to a five-star restaurant and being served a perfectly good cheeseburger. Solid? Yes. Uninspired? Absolutely. It won’t replace your AoE primaries, but if you crave a status-applying machine that can hold its own in most content, the Flux Rifle is a worthy sidekick.

Then there’s the Tenet Ferrox, a weapon that suffers from a classic identity crisis. Its primary fire now auto-charges when you hold the trigger, making it a decent room-cleaner, but the alt-fire tether remains the same awkward gimmick it always was. It’s like having a smartphone that can make excellent calls but still can’t send a text message properly. The Ferrox’s alt mode demands a complete rework, and until that happens, this speargun is merely a curiosity for collectors—or a pickup when Ergo offers a juiced progenitor roll above 55%.

The Tenet Grigori scythe introduces a unique flair: slide attacks or chained heavy attacks fling out photon discs that pierce through crowds like a hot knife through butter. However, a disappointingly low 1.6x critical multiplier caps the potential of those projectiles, making them more flash than substance. Still, the base scythe itself is a competent heavy-attack weapon, and with a 38% status chance, it excels as a Condition Overload primer. Think of it as a multitool—not the best at any single task, but versatile enough to rescue you from sticky situations.

When it comes to secondaries, the Tenet Diplos is a tale of two personalities. Hip-fire with these dual pistols and you’ll marvel at the sheer bullet output and chunky critical stats. Aim down sights, however, and the lock-on system fires pitifully weak center-mass bursts that couldn’t tickle a level 50 Butcher. The Diplos auto-reloads while holstered, so it shines as a hip-fire backup for a slow primary like a bow or a sniper. It’s the kid in class who aces every test but still insists on drawing doodles in the margins.

Now we’re climbing into territory where Tenet weapons truly shine. The Tenet Agendus sword-and-board merges defense with a devastating heavy attack that launches an Arca Plasmor-like projectile capable of headshots and scaling off combo multiplier. The charge animation is longer than a Kubrow’s memory, leaving you vulnerable, but the payoff is a radiation-packed orb that erases groups of enemies. Pair it with a Primer secondary and you’ll be holding a fortress in melee.

The Tenet Tetra is where the real party begins. Its primary fire is already a respectable assault rifle, but the alt-fire launches a plasma grenade with a radius so large it swallows entire corridors, costing 80 ammo per shot. This grenade hits with the force of a miniature sun going supernova inside a bottle, leaving only scorch marks and loot drops behind. Even after a nerf, it remains a staple for anyone who loves the Stahlta but wants a slightly less ammo-hungry alternative.

Next up, the Tenet Detron proves that appearances deceive. Base stats look weaker than the Mara Detron, but a 60% progenitor bonus flips the script, and ten pellets per shot with an 18% status chance each turn this pocket shotgun into a status-carpet-bomber. Its alt-fire empties the magazine in a blink, making it the ultimate Condition Overload primer or a nasty surprise for Acolytes. It’s like carrying a miniature sandblaster filled with poison—messy, efficient, and deeply satisfying.

Topping the Sister Lich offerings is the Tenet Spirex, a hand cannon that demands respect. Every shot causes a small explosion and guarantees an Impact proc, which synergizes perfectly with the Hemorrhage mod to slap enemies with high-damage Slash procs. With a 26% critical chance and a 2.4x multiplier, the Spirex turns headshots into execution orders. It’s the Lex Prime’s cynical cousin, delivering one-liners that leave armour-stripped bodies in its wake. Slow to fire, but each round feels like flipping a light switch in a dark room full of Infested.

In 2026, the Tenet meta hasn’t changed drastically, but the weapon pool has matured like an Orokin vault. Whether you’re a new Tenno looking to break into Steel Path or a veteran seeking a new obsession, these Corpus-crafted beauties offer a mix of raw power and quirky mechanics that keep the Origin System interesting. Focus on the high-tier picks—Spirex, Detron, Tetra, and Agendus—and you’ll wonder how you ever survived with plain old Primes.