Remember, if you haven't used our clues pages yet, check out the instructions here to learn how they work and how to best utilize them. 

5a.jpg

Hint 1

Each grouping of birds will become a single letter.

Hint 2

One more thing on this card will assist you.

Hint 3

Hmmm... it can't be a coincidence that your stamps also have birds on them.

Hint 4

The stamps dictate the numerical value of each bird.

Hint 5

Higher birds are worth FIVE, lower birds are worth ONE.

Solution

Final Solution: The first grouping has four birds total. Two high, two low. These are 10 and 2 respectively, making a total of 12, which becomes the letter "L".
The plaintext solution reads: "lasttimejason@gmail"

5b.jpg

Hint 1

There's not much left here you haven't used.

Hint 2

One element from each of your postcards that hasn't come into play or been used for a puzzle just yet.

Hint 3

Take a look at the length and width of each of the English messages on each post card.

Hint 4

Each line in the English messages is five words long -- the same as the amount of Xs in a row! The amount of lines is also equal to how many Xs exist vertically.

Solution

Final Solution: The red X's mark the important words in each message across all 5 cards. The final plaintext reads: "Put Ouroboros in the subject line when you contact me."

Misc 1.jpg

Hint 1

If you've solved all your other postcards, you should have everything you need to fill in this grid.

Hint 2

If you can't fill every line, go back and make sure you've solved every puzzle on every card.

Hint 3

The languages used on the side will help you place the words.

Hint 4

Once the chart is filled, examine it carefully.

Hint 5

From every angle and ever direction.

Hint 6

The password you seek is written bottom-up.

Solution

Final Solution: You should see the word "vengeance" written in the last blocks where they all line up.

Misc 3.jpg

Hint 1

There's a lot to process here, but you can't do it all.

Hint 2

Pay attention to his directions for receiving the files.

Hint 3

If "shipment" is the first code to retrieve a file, that should tell you where to find the rest.

Hint 4

Have you decipher all of your stamps? If not, now is a good time.

Solution

Final Solution: Send emails to Jason using each of the decoded stamp words from the previous 4 cards.

Misc 4.jpg

Hint 1

Jason sent you a lot of files, and you'll have to make sense of them in order to help the FBI.

Hint 2

If you don't have any files/e-mails from Jason, you'll want to go back and get them before you proceed.

Hint 3

If you've solved each of the first 4 cards in their entirity, you will be able to identify the correct code number from each list.

Solution

Final Solution: Cross reference the details of each card (location, codename, and role within the Ouroboros) to identify a single number from each list.

Shipment - Yggdrasil - Seattle - Boss - 7845530
Chateau - Unicorn - Poughkeepsie - Recruiter - 9046671
Broadside - Leviathan - Dallas - Operations Chief - 3433321
Periscope - Manticore - Austin - Mole - 3233212