The Giant (Black Ops III)/Ciphers and Scrap Paper

There 6 ciphers and one scrap paper in The Giant. Two ciphers are currently unsolved.

Cipher #1
This cipher is a barcode.

The plaintext is as follows:

"The mountain must be searched for the frozen one."

Cipher #2
This cipher uses the periodic table and the atomic number of the different chemical elements.

The plaintext is as follows:

"In the cell below the waves is where honor suffers."

Cipher #3
This cipher is a Lorenz cipher.

The plaintext is as follows:

"When finished we will return to the house and the infinite"

Cipher #4
This cipher is currently unsolved.

Cipher #5
This cipher is currently unsolved.

Cipher #6
This cipher is a Illuminati cipher.

The plaintext is as follows:

"Living dead"

Scrap Paper
There's a scrap paper around the map. The paper is blueprint depicting the Summoning Key and signed by Monty.

Trivia

 * The Illuminati cipher is present in the original map, Der Riese.