Mystery Launch Codes

Mystery Launch Codes is a in Xenoblade Chronicles 2. It is a DLC quest introduced in version 1.5.1 as part of the DLC Quest List - Distribution 4 DLC. It can be received from Adenine in the Wall Power Control Room in the Streets of the Land of Morytha, after starting and clearing an Extra-Ancient Wisdom level 5 and Keen Eye level 9  check, provided Adenine and KOS-MOS are in the party.

Quest objectives

 * Complete both objectives:
 * Defeat the Stopper Sovereigns in the Land of Morytha to obtain the codes.
 * To the side of Highway 8, the middle one has the code.
 * Defeat the Stopper Sovereigns in the Land of Morytha to obtain the codes.
 * Collapsed Roadway, the middle one has the code.
 * Input the codes at the ancient tablet within the Wall Power Control Room in the Land of Morytha.
 * Requires clearing an Extra-Ancient Wisdom level 5 and Keen Eye level 1 check.
 * Input the codes at the Data Processing Room in the World Tree.
 * Requires clearing an Extra-Ancient Wisdom level 5 and Keen Eye level 9 check, then failing an Extra-Ancient Wisdom level 99 and Keen Eye level 9 check, then clearing a Mental Arithmetic level 3 check.
 * Investigate the area of Lv. 3, Alioth inside the World Tree.
 * Defeat the Nameless Sentinel by Lv. 3, Alioth inside the World Tree.

Results
"The launch codes activated the most powerful guardian at the World Tree. Even KOS-MOS seemed exasperated. (DLC Quest)"

Trivia
No other enemies will appear in Lv. 3, Alioth while the Nameless Sentinel is there.