personne... ou presque :
1-The quest is started by buying the Hidden Message key Blueprint from the Market.
2-After the key is crafted, go to the Quest section of the Codex, where the Hidden Message quest will be shown. Select the quest, then click on "Begin" to start.
3-Upon starting the quest, Ordis will begin a transmission and tell a riddle along with his opinion on it. The riddle can be viewed again in the inbox.
4-Go to Olympus, Mars and complete the Infested Ship Exterminate mission there, which will reward the Mirage Helmet blueprint.
5-On the Liset, head to the foundry and craft the Helmet blueprint. Upon claiming the completed piece, the next riddle will show.
6-The next mission will be in Calypso, Saturn, which is an Infested Ship Survival. The mission can be completed by leaving immediately after the first 5 minutes. Completing this mission will give Mirage Systems blueprint.
7-Craft the systems blueprint in the foundry. The last part of the riddle will show upon completion of the systems.
8-The final mission of the quest will be on Charybdis, Sedna, which is a Hive Sabotage mission. The Mirage Chassis blueprint will be awarded on successful completion.
Blueprint Locations :
Mirage Blueprint - Market
Mirage Helmet Blueprint - Olympus, Mars (must have started Hidden Messages quest from Codex Quests)
Mirage Systems Blueprint - Calypso, Saturn (must have built Helm)
Mirage Chassis Blueprint - Charybdis, Sedna (must have built Systems)
http://warframe.wikia.com/wiki/Hidden_Messages
Attention il te faut crafter chaque partie de la frame avant de commencer la suivante, c'est pas comme les autres. Bon jeu!