In the game "Collapse Railroad", "Unmanned Symphony" is a hidden achievement in the game. To achieve this achievement, players need to complete the following steps:
Answer: We need to adjust the mood of NPC Max near Sweet Corner to happy.
1. First, we open the Pinoconi Golden Moment Map.
2. Then find the sweet corner on the west side of the map and teleport.
3. After that, we came to the square and found the NPC Max shown in the picture below.
4. Interact with Max and activate the clock trick to adjust his mood to joy.
5. After the adjustment is completed, the Unmanned Symphony achievement can be unlocked.
The above is all about how to achieve the unmanned symphony achievement in "Honkai Impact: Star Rail". For more game guides, please click on the source code website.