How to do the seventeen-year-old map mission of the Collapsed Star Dome Railway? Players need to go to the mission location to retrieve the letter and complete the mission after reading it. So what is the next method? Now I will introduce it to you.
Mission location: Base cabin
1. First, we go to the designated location of the mission to unlock the hidden achievement [17-year-old map].
2. After arriving at the mission location, click on the table near the computer to pick it up.
3. Then we will read the note written to the intruder. After reading it, we can unlock the hidden achievement [17-year-old map]
