Melancholy Tyrea is a Surprise Quest in Xenoblade Chronicles. It is triggered between Watchpoint Junction and Hope Farm in Colony 6. It is the only quest in the game to feature fully voiced cutscenes. The third objective of the quest involves the boss battle against the Mysterious Telethia at Lakeside and requires the party to defeat it.
- "Carry Tyrea to Junks for medical treatment."
- "Look for a mysterious Telethia in the same spot as a past Telethia battle in Makna Forest."
- "Defeat the Mysterious Telethia at Lakeside in Makna Forest.
- "The mysterious Telethia turned out to be Yumea. Put an end to First Consort Yumea's suffering."
"You helped Tyrea to fulfill the duty entrusted to her by First Consort Yumea."..