The Fortbyte number 70 of the decryption challenge is found falling off the combat bus. Start by equipping the Vibrant Contrails (step 26 of the combat pass, paid version) and then start a game.
Jump off the bus above Lazy Lagoon (this is the pirate village where there is a pirate ship moored) if you have properly equipped the Vibrant Contrails, you will see colored rings above the lagoon. Pass through each of them and the Fortbyte will automatically be picked up by passing through the last one.
Written by Augustin "TheGreatReview" Héliot. Translated from French by Millenium.us.org.
