The Tysis is an Infested sidearm that fires 
Corrosive darts that deals damage over time supported by its incredibly high status chance, allowing it to wear down even the heaviest of armor with ease.
Characteristics[]
This weapon deals primarily Corrosive damage.
Advantages:
- Innate
Corrosive damage – effective against Ferrite Armor and Fossilized. - Good Puncture damage – effective against armor.
- Tied with uncharged Epitaph and Kuva Nukor for the highest status chance of all secondaries.
- Pinpoint accuracy.
- High reload speed.
- On kill, bodies will follow the dart that killed them, damaging anyone in their path and pinning the corpse to walls.
Disadvantages:
- Innate Corrosive damage – less effective against Proto Shields.
- Low Impact damage – less effective against shields.
- Projectiles have travel time.
- Extremely low critical chance.
- Low critical multiplier.
- Relatively low fire rate.
- Fairly high recoil.
Acquisition[]
The Tysis's blueprint can be purchased from the Market.
| Manufacturing Requirements | |||||
|---|---|---|---|---|---|
 30,000 |
 2 |
 400 |
 900 |
 100 |
Time: 24 hrs |
Rush:  30
| |||||
 Market Price: 120
|
 Blueprints Price: 30,000
| ||||
This weapon can be sold for 
2,500.
Notes[]
- The 81 Corrosive damage is dealt in 3 ticks of 27 damage, over the course of 2 seconds. This allows a single dart to proc multiple times.
- If the dart punches through an enemy, they will instead receive 1 tick.
- Tysis needles retain their course after piercing their first target, possibly penetrating multiple targets without losing accuracy.
- Tysis needles will be invisible if the energy color is Black, making target leading harder as you can't estimate travel speed and deviation effectively.
Tips[]
- A status chance of 260% may be obtained without any riven mods by combining Stunning Speed, Sure Shot, Carnis Stinger, Jolt, Pistol Pestilence, Scorch, and Frostbite (for a maximum of 305% with Embedded Catalyzer).
- With its high status chance, the Tysis may be used as a softening weapon against Grineer. Corrosive effects stack, allowing another weapon to easily deliver the killing blow.
- Adding Blast damage makes this weapon ideal for battling Infested Ancients, as Fossilized enemies take more damage from both elements.
Trivia[]
- The Tysis' needles may stretch targets if they are already pinned to the wall by another weapon's projectile (like the Boltor).
- This is the second Infested weapon available on the Market. The first was the Mire.
- The Tysis is the first Infested sidearm to be non-clan exclusive.
- The Tysis may derive its name from the suffix "-ptysis", which typically refers to spitting out substances (e.g. Hemoptysis would refer to spitting blood). It may also be based on Phthisis, the ancient Greek name for Consumption, AKA Tuberculosis, which was named such for "eating its victims from the inside".
- The head of the Tysis vaguely resembles the head of a Goblin shark.
Media[]
In the Codex
Tysis With Infested Color Pack
Tysis in the Arsenal
Tysis
Tenno Reinforcements - Tysis
Warframe 11.6 ♠ Tysis - An approved Acrid, you decide
Warframe Tysis
A Gay Guy Reviews Tysis, The Non-Quitter Spitter
Warframe Beta - Tysis (HD)(HUN)
Warframe 100% Status Tysis Build update 12.4.5
Warframe - All Infested Weapon Reloads in 30 seconds (2013 - 2019)
Update History[]
Update 25.0 (2019-05-22)
- Tysis Corrosive Damage-over-time will now be apply a single tick to targets the projectile punches through.
Update 24.6 (2019-04-04)
- Damage changed from 79 Corrosive to 9 Impact, 23 Puncture, 17 Slash and 81 Corrosive delivered in 3 ticks of 27 each over 2 seconds.
Hotfix 23.1.2 (2018-07-24)
- Fixed a visual bug with the Tysis' dangles getting tangled.
Update 22.12 (2018-02-09)
- Mastery Rank increased from 4 to 9.
- Damage increased from 35 to 79.
- Critical chance increased from 2.5% to 3%.
- Improved Projectile trail FX.
- Mag size decreased from 15 to 11.
Update 11.7 (2014-01-15)
- Introduced.
