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. 

Card 5 Puzz 1.jpg

Hint 1

These are some very specific shapes.

Hint 2

In fact, if you put these all together they seem reminiscent of a different shape...

Hint 3

...back on the first postcard.

Solution

Final Solution: Using the large symbol on the front of the very first postcard you can assign a symbol to each of these shapes. Using the guide on the back of this postcard you can assign a letter to each of those symbols. Taken all together, you can extract the plaintext: "Anaconda."

Card 5 Puzz 3.jpg

Hint 1

How am I supposed to line up all these letters?

Hint 2

If only you had a map of some kind...

Hint 3

If it helps, you've already connected this card to another card.

Solution

Final Solution: Using the lines from the first card with the shape on the front, you can trace a path that leads from letter to letter. When extracted, you'll get the plaintext: "Send me the confirmation number."

Card 5 Puzz 4.jpg

Hint 1

Have you solved the other stamps?

Solution

Final Solution: The numbers translate to the word "Tannin."