Collector

 is a Quest in Escape from Tarkov.

Dialogue
"Ah, mercenary. Local troubleshooter, huh... Yeah, I know about you. Do not think that you are the only one. There are some other serious people out there, perhaps even more skilled than you are. They're walking around Tarkov, minding their own business, and from time to time leave some souvenirs behind. Here's a job for you: find me those items. No questions asked, okay? I know they're a hard find, but the reward won't disappoint you. One condition: you have to find everything yourself, no traders. Believe me, I know when people lie."

Requirements

 * Complete all quests. "Multiple choice" quests like Supply plans/Kind of sabotage count as completed. The following quests are not required and do not need to be completed:
 * An Apple a day keeps the Doctor away
 * Anesthesia
 * Charisma brings success
 * Colleagues - Part 1, Colleagues - Part 2, Colleagues - Part 3
 * Hippocratic Oath
 * Hunter
 * Hunting trip
 * Huntsman path - Controller
 * Huntsman path - Evil watchman
 * Huntsman path - Justice
 * Huntsman path - Sadist
 * Import
 * Living high is not a crime - Part 1
 * Mentor
 * Peacekeeping mission
 * Regulated materials
 * Rigged game
 * Samples
 * Search mission
 * TerraGroup employee
 * Textile - Part 1, Textile - Part 2
 * The bunker - Part 1, The bunker - Part 2
 * Chemistry closet
 * The stylish one

Objectives

 * Find Old firesteel in raid
 * Hand over the Old firesteel
 * Find Antique axe in raid
 * Hand over the Antique axe
 * Find Battered antique Book in raid
 * Hand over the Battered antique Book
 * Find FireKlean gun lube in raid
 * Hand over the FireKlean gun lube
 * Find Golden rooster in raid
 * Hand over the Golden rooster
 * Find Silver Badge in raid
 * Hand over the Silver Badge
 * Find Deadlyslob's beard oil in raid
 * Hand over the Deadlyslob's beard oil
 * Find Golden 1GPhone in raid
 * Hand over the Golden 1GPhone
 * Find Jar of DevilDog mayo in raid
 * Hand over the Jar of DevilDog mayo
 * Find Can of sprats in raid
 * Hand over the Can of sprats
 * Find Fake mustache in raid
 * Hand over the Fake mustache
 * Find Kotton beanie in raid
 * Hand over the Kotton beanie
 * Find Raven figurine in raid
 * Hand over the Raven figurine
 * Find Pestily plague mask in raid
 * Hand over the Pestily plague mask
 * Find Shroud half-mask in raid
 * Hand over the Shroud half-mask
 * Find Can of Dr. Lupo's coffee beans in raid
 * Hand over the Can of Dr. Lupo's coffee beans
 * Find 42nd Signature Blend English Tea in raid
 * Hand over the 42nd Signature Blend English Tea
 * Find Veritas guitar pick in raid
 * Hand over the Veritas guitar pick
 * Find Evasion armband in raid
 * Hand over the Evasion armband
 * Find Can of RatCola in raid
 * Hand over the Can of RatCola
 * Find Loot Lord plushie in raid
 * Hand over the Loot Lord plushie
 * Find WZ Wallet in raid
 * Hand over the WZ Wallet
 * Find LVNDMARK's rat poison in raid
 * Hand over the LVNDMARK's rat poison
 * Find Smoke balaclava in raid
 * Hand over the Smoke balaclava
 * Reach Level 71

Rewards
"Have you got it all? Great. You have proved yourself useful, mercenary. Here's your hard-earned reward, just as promised."
 * Secure container Kappa

Riddle
Until April 19, 2019 there was a hidden riddle in the the quest title, dialogue and reward text.

 =EjNyQzY2MzMjZjM3kjNyIjY2YjM - 3 ==Qdy5yaqBybx1G 31IqhWZ4lGI1hnagwSdytmagYXZgUnZxhXagEH 31IklHI2JWdph2al9GIiFXdsVHagUmagU3cxJmZg 31IWc5NXdmlGIxBSa5BSdoVHeqpgZpNGdgQ3Y 31gMnZvlWZnBybgI2dgQnezdmZpNWbgInY3RHI 316p3drBSaj1GIscmYvt2ZgYHa3tGI1J2d692cyBiZ 31zhGdvpgcyVWdnBSZiBichJGIsgXeupGIypnYlB 31yciBSZiVmcjpncgEXeoJWdmBiZjJ3ZmBCbh5m 31egomY1pgC0tGe1BCazFGZ3dXa4xGIjBHboBS 31dkByZ0FnYqNGI0dXaKAiZlJ3b6hWYgcmZlZ3cg 31IXdnByciBiYqdGIoJGbgcWd0hmYl9GIyFmdzNnT - 2 ==AdpBiZvBCd19GI mxWZzJXdvlHIlRXY09mcgwCbsV2dgMXYgI XZi1WduBiblRHI09mcgMXag4WZlRncphGd - 1 rebmun eslaf si neetriht taht si hturt dnoces ,6 dna 4 fo mus eht ees uoy esab eht ta ,si hturt tsriF

Quest Description
Solving the riddle starts with the quest description, the first paragraph of the hex encoded text equating to  and the second one to. The first uncovered paragraph indicates the existence of Atbash ciphered text, the text  equating to , a clear substitution pattern. Using the aforementioned substitution pattern, we can take the second paragraph found in the quest description and translate it to, a clue which will become useful later along with the   and   texts.

Quest Reward Text
The first operation to be applied to the quest reward text seems obvious, either from the  (  if mirrored) text or from the nature of the text, it being a simple mirror of the whole text block. After a mirror, the paragraph  is revealed, making us understand that the number 13 should be eliminated in all further findings and that the base being used for them will be 64, instead of the human-used 10. Thus, after removing the already used text, removing the number 13 and decoding the text from Base64, we can observe the following text:  which indicates the use of the rot13 cipher. After another removal of our used text and a rot13 decryption we can observe the following lines:  coupled with   and   coupled with   which indicate the Affine and  Caesar ciphers respectively. After decyphering the Affine encoded text with the values  we obtain   and after decoding the Caesar encoded texts with a shift of 1 and 3 respectively we obtain after dealing with , both clues helping later.

Piecing Everything Together
To continue, we'll start with the remainder of our quest reward text:  a hex encoded string which we should not decrypt for now. The clue  shows that 2 (a number which looks similar to a swan) should be replaced by the number 5, doing so in our hex text and then finally decoding it, indicated by the   clue, giving us. Looking closely at the obtained string, we can observe the existence of the word  within it, the clue   telling us to remove it from the text. Doing so will finally reveal the text  which if attached to the   string obtained earlier, and being added onto a YouTube short link, as indicated by   revealing a YouTube video.

The Pastebin
Approximately a week after finding the first YouTube video, a Pastebin link surfaced in the video description. For ease in describing the decryption progress, we'll split the document in 4 sections, one for each paragraph and will start with the last one since it exposes the 1st step within the process.

Paragraph 4
The paragraph is Base64 encoded, but before decoding it, all characters that are found surrounded by a  character need to be deleted and the contents need to be set aside to form the string   which equates to   in hexadecimal. After the removal of the odd characters, the text  is revealed. We can note down the "file number" as the rest is just flavor text.

Paragraph 3
Using the former ROT47 clue we can solve this paragraph, applying a ROT47 decryption after a Base64 decode yielding the content we need, but slightly malformed. To clear this malformation every 22nd character in the original string needs to be removed (all of the characters being a 0), thus revealing. Like the last paragraph, we can ignore all text besides the file number.

Paragraph 2
After a reverse of this paragraph we can observe the string  (originally  ) is an outlier and will serve as a clue later, so we can remove it. The rest of the paragraph (still reversed) can simply be Base64 decoded to find. As with the former paragraphs, keep the file number and ignore the rest.

Paragraph 1
As with the former paragraphs we start with a simple Base64 decode. We can now take the  clue and use it as a substitute alphabet while ignoring the importat numbers, giving us the   string, which again, can be disregarded besides the file number.

Finale
Concatenating all file numbers together yields. If we group the characters and get their coresponding ASCII character, we obtain  which leads to the final YouTube video. The video has a few game keys in its description.The key are all activated and not available anymore.

Trivia
The second found video is reused into an official short movie called "Raid".

Sběratel Sammler Collectionneur A049 C026 0101PD