Inbox messages during the event.
Introduction[]
A Rare Opportunity
Tenno,
I do hope you will forgive my concealed identity, but dealing in these unsavory circles demands unusual discretion.
I'm such a big fan of the Tenno. You've accomplished so much, and with such rudimentary equipment. That's why I'm concerned about the coming Balor Fomorians. I think we both know your warframes are simply not sophisticated enough to stop them.
But I can help you... for a price.
You see, I have an appetite for the rare and extraordinary, and I've recently learned of a fine substance known as cryotic. If you are willing, I will supply the necessary equipment and coordinates for its extraction. In return, I will enlighten you with what I know about technology that could defeat this Balor threat.
To sweeten the deal, I am even willing to award bonuses to those of you who exhibit outstanding performance.
I must say, some of you display the inklings of good taste. If our partnership is a success, perhaps we will get to know each other better.
Regards,
Progressing Through The Event[]
I See Progress
This new supply of cryotic is a great start to my venture. I encourage you to keep excavating.
Here, take this badge and display it proudly. I do believe it will become the fashion statement of the solar cycle once my project is complete.
In the meantime, I've transmitted the coordinates of a potentially more lucrative excavation site located in Phobos to you. You seem to have the hang of things now; perhaps you'll fare better there.
Regards,
(Attachment: Cryotic Front Emblem)
So Much Potential
Congratulations, you've just reached a new personal milestone in cryotic excavation! But, I can't help but think, "Tenno, you can do better." To help, I am donating these old Ice mods I have lying around. Perhaps with them you can achieve even greater extraction efficiency?
Speaking of ice, my latest intel shows the presence of some remarkable cryotic deposits located in Europa. I've sent the coordinates your way. It may be a little chilly there – and the locals probably won't be welcoming you with open arms – but this will certainly be the most rewarding site... all in a day's work, right, Tenno?
Keenly Awaiting Improved Performance,
(Attachments: 
Vicious Frost, Frostbite, Rime Rounds, Frigid Blast)
Important Work
Tenno, have you ever tasted the Martian Oasis Jellyfish?
Silly me, I doubt you've had the rare pleasure of feeling their delicious barbs gently electrify your palate. I suppose you're also blissfully ignorant of how easily the creature spoils during transportation. A dreadful dilemma! Should those with the means to sample this delicacy suffer the indignity of a trip to Mars? I say no. That's why your cryotic is so important. Cryotic can instantly freeze the little darlings, inducing stasis and preserving their subtle flavourings for enjoyment anywhere in the System. Tenno, I hope you see now how important this work is.
And don't think I haven't noticed how diligent you've been. I've decided to recognise your efforts with a token of appreciation. I do hope my gift brings some semblance of joy – you seem altogether too serious.
Now, if there were only a way to convince the little Jellies to breed more. They seem to be harder and harder to catch these days.
With Gratitude and Thanks,
(Attachment: 
Latron Wraith)
Aftermath[]
A few weeks after the event ended, Darvo started to promote his Darvo deals, sheding light on the identity of the mysterious new associate.
A MESSAGE FROM DARVO
So Tenno, word has it you've been working with a certain Baro Ki'Teer? What? The name doesn't ring a bell? He had you searching all over for cryotic. I guess maybe he wouldn't tell you his name – he does that. He thinks it makes him seem mysterious – it doesn't. Plenty of people know his name. Either way, I hope he lived up to his end of the bargain. Not everyone is as trustworthy as your friend Darvo.
Wait, did someone say bargain? I did!
Here we go. For one day only, the Atterax is half price. Use this bladed, motorized whip to give the Grineer a taste of their own medicine. Or, if you're like me, you might find it handy for snaking out the plumbing in your ship. It's up to you.
—DarvoA MESSAGE FROM DARVO
I guess I was curious. I paid Baro Ki'Teer a crate full of Prime blueprints and two Argon Crystals just so I could sample his so-called "delicacy". Those Oasis Jellyfish caused my throat to swell up for three days. Damn near killed me. What a rip-off.
But you know what's not a rip-off? My new bundle. Here's what you get: the Hydroid Warframe, Nami Skyla Blades, Triton Helmet, Para Carrier Sentinel and all its fancy parts. Hell, I'll even throw in Credit and Affinity Boosters, just because.
Now that's money well spent.
—DarvoA MESSAGE FROM DARVO
Oh, let me guess, Baro Ki'Teer wouldn't even show you his face – figures. He thinks he's too good for you and me with his swanky clothes and exotic foods that taste like mud. Well, you know what Tenno, when you buy from him, that's what you're paying for. When you buy from Darvo, you get nothing but deals.
Allow me to provide a simple illustration. Today only, at 50% off, I'm offering you the Amprex electricity rifle. 10,000 volts of shut-your-elitist-face. I never wanted to go to his stupid party anyway.
—Darvo