Do these 3 things before closing this tab:
1Clear out junk files and repair common Windows errors2Fix the driver behind crashes, sound loss and screen glitches3Repair Windows errors before they cause bigger problemsWarframe has 16 Tenet weapon variants confirmed in Digital Extremes’ official notes through Update 42: 12 earned by vanquishing Sisters of Parvos, one purchased from Ergo Glast, and four Tenet melee weapons bought with Corrupted Holokeys. To target a Sister weapon, enter the Granum Void with a Zenith Granum Crown, reach Rank 1, then inspect and Mercy the Candidate carrying the weapon you want. The melee weapons and Tenet Ferrox use Ergo Glast’s Relay offerings instead.
All Tenet weapons and their acquisition routes
This roster reflects Digital Extremes’ official updates through Update 42. The eight weapons in the 2021 launch notes were only the original Sister pool; later updates expanded it.
| Weapon | Class | How to get it |
|---|---|---|
| Tenet Envoy | Primary | Generate a Sister carrying it, then vanquish her. |
| Tenet Diplos | Secondary | Generate a Sister carrying it, then vanquish her. |
| Tenet Spirex | Secondary | Generate a Sister carrying it, then vanquish her. |
| Tenet Tetra | Primary | Generate a Sister carrying it, then vanquish her. |
| Tenet Flux Rifle | Primary | Generate a Sister carrying it, then vanquish her. |
| Tenet Arca Plasmor | Primary | Generate a Sister carrying it, then vanquish her. |
| Tenet Cycron | Secondary | Generate a Sister carrying it, then vanquish her. |
| Tenet Detron | Secondary | Generate a Sister carrying it, then vanquish her. |
| Tenet Plinx | Secondary | Generate a Sister carrying it, then vanquish her. |
| Tenet Glaxion | Primary | Generate a Sister carrying it, then vanquish her. |
| Tenet Quanta | Primary | Generate a Sister carrying it, then vanquish her. |
| Tenet Ferrox | Primary | Buy it from Ergo Glast at a Relay; it is not a Sister Candidate weapon. |
| Tenet Agendus | Melee | Buy from Ergo Glast with Corrupted Holokeys. |
| Tenet Exec | Melee | Buy from Ergo Glast with Corrupted Holokeys. |
| Tenet Livia | Melee | Buy from Ergo Glast with Corrupted Holokeys. |
| Tenet Grigori | Melee | Buy from Ergo Glast with Corrupted Holokeys. |
The original eight Sister weapons were Tenet Envoy, Diplos, Spirex, Tetra, Flux Rifle, Arca Plasmor, Cycron, and Detron, as listed in Digital Extremes’ Update 30.5. The later official additions were Tenet Plinx and Ferrox in Update 32.2, Tenet Glaxion in Update 35.6, and Tenet Quanta in Update 42.
How to get a Tenet weapon from a Sister
A Sister’s weapon is set when you choose to create that adversary. The Candidate displays the weapon she will carry before you Mercy her, so you can decline a result you do not want rather than committing blindly.
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- Complete the Call of the Tempestarii quest. Digital Extremes’ detailed Update 30.5 procedure also requires that you have no active Kuva Lich. The launch announcement mentions The War Within as well; if the game’s current quest gate differs, follow the in-game requirement.
- Go to a Corpus Ship tileset with a Zenith Granum Crown. Use it at a Golden Hand Tribute to enter the Granum Void.
- Reach at least Rank 1 in the Granum Void. A Sister Candidate will then appear aboard the Corpus Ship.
- Down the Candidate and check the weapon shown above her. If it is the weapon you want, the player who downed her can Mercy her to create the Sister. If not, leave her un-Mercied and try again.
- Once the Sister is active, collect the required Requiem information, equip and solve the correct Requiem sequence, and confront her. Vanquish her to claim her signature weapon; converting her gives a companion/crew option instead of the weapon reward.
Digital Extremes describes vanquishing as returning stolen Credits and awarding the Sister’s signature weapon, with an Ephemera if applicable, in its Update 30.5 notes.
How to get Tenet Ferrox and the melee weapons
These are Ergo Glast purchases, not Sister Candidate rewards. Earn Corrupted Holokeys from Proxima Void Storms, then visit Ergo Glast at a Relay and inspect his current offerings.
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- Tenet Ferrox: offered by Ergo Glast; the official Update 32.2 notes establish this route.
- Tenet Agendus, Tenet Exec, Tenet Livia, and Tenet Grigori: melee weapons bought with Corrupted Holokeys. Update 30.5 stated a price of 40 Corrupted Holokeys per weapon and described one version of each as available weekly. Those are historical source-era details, not confirmation of today’s price or stock; check Ergo Glast in game.
Choose a Sister weapon and plan its bonus
Use the Candidate screen to control which weapon you pursue, then compare the weapon’s current in-game stats and role before committing. The launch notes describe several distinguishing mechanics: the Tenet Envoy fires aimed, wire-guided rockets and reloads while holstered; the Tenet Tetra has a larger magazine than the original and an alternate-fire grenade launcher; Tenet Arca Plasmor blasts ricochet; and the Tenet Cycron’s energy disc can hit nearby additional targets. These descriptions help identify play style, but they are not a current quantitative ranking.
The Warframe used to create a Sister determines the weapon’s bonus damage type; Digital Extremes gives Ember producing Heat as an example in its launch-era announcement. Update 42 says the bonus percentage roll for Sister and Kuva adversary weapons is randomized equally across the range, but the official sources cited here do not establish a numeric current range. Check the weapon’s displayed values in game rather than relying on an uncited percentage.
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