Operation: Shadow Debt

"The Stalker has found others as twisted as himself. He calls them his Acolytes and he's sent them after ME?!

SHHH. I have to be very quiet, they cloak, they could be hiding anywhere… listening to this.

I'm calling in my favor. Break into Corpus and Grineer installations and steal their security data. With enough data, I can determine their cloaking patterns and turn the tables on these…betrayers.""

- A message from Alad V

What You'll need to do

 * Help Alad V by completing 4 missions to get data on these Acolytes that are pursuing him.
 * Use his signals to track down the mysterious 'Acolytes'!
 * Each Acolyte will be detected on a planet – seek them out on various nodes on the listed planet.
 * Once the Acolyte is found – the hunt is on! The node will be revealed and players can deploy on this node to hunt out the Acolyte in the level and damage them.
 * If enough damage is done, the Acolyte will flee, leaving behind new Mods!
 * There are 5 Acolytes in total, find and hunt each of them down until they have 0 Health remaining!
 * … but what happens once these 5 Acolytes are killed?

What you need to know

 * This Operation is on now until you've killed all 5 Acolytes as a community. Spoilers: Once you've done that, a final challenger will appear which will be active for 3 days! The event duration is however long it takes you as a community to kill the 5 Acolytes, + 3 Days for the final challenger! While it's not required to have encountered any of the 5 Acolytes before facing this Challenger, we encourage you to do so for Mod collecting and helping out the community goal!
 * Acolytes will move around to try and escape the hunting tactics of the Tenno – be prepared to seek them out across many planets!

Rewards

 * Complete the first 4 Missions for Alad V: Operation: Shadow Debt Sigil, Orokin Catalyst.
 * Defeat 10 Acolytes in-mission: Operation: Shadow Debt Sigil, Orokin Reactor.


 * 20 new Event Mods are here, and can be earned as drops from Defeating Acolytes or by playing the bonus final challenger mission. The names of these New mods are as follows, find them in-game to reveal their function:


 * Successfully complete the mission against the final challenger: Vulkar Wraith.
 * Clear 15 waves total in the bonus final challenger mission: Acolyte Lacera Skin.

CLAN TROPHY REWARDS
Clan Rewards: All participating Clans will receive an event trophy for their attempts on the bonus final challenger mission. The following table lays out which Trophy your clan will earn depending on the Sum of all participating Members best Wave.

Tips

 * The Acolytes are not immune to your Warframes' Abilities. Use whatever means possible to take them down.
 * Crowd Control abilities, such as Rhino Stomp or Molecular Prime can be effective at stopping the Acolyte in its tracks.
 * Damaging abilities, such at Sonar or Antimatter Drop can do massive amounts of damage to the Acolyte.
 * Note that you can only do a maximum amount of damage to the Acolyte within the given mission.
 * Also, Excalibur's Exalted Blade is extremely useful against Acolyte.

Trivia

 * The date on the Alad V mail is January 18, 2016, which marks the initial release goal for this Operation.