Long story short: The last two trophies of the German localisation have the same name and the same requirements, but are rewarded with gold and silver respectively. And btw, there are only four instead of five trophies for this DLC in TSW 2020.
Ive finished the 520 miles now, but i just got the Gold trophy not the Silver one. So the silver must be another trophy or is still wrong there. I dont know. I really would like to know what this is!
Silver trophies: Complete the Class 52 scenario 'Swap Shop' Complete 15 services using the Class 52 Complete 52 passenger boarding tasks in the Class 52
I started this thread last October and didn't check recently, but this trophy seems to have a wrong localisation. Edit: Just checked again, and now I can confirm that it's a) a bug and b) the right trophy objective. Why do we have to fiddle with the console's system language to find out about this? I'm very disappointed.