I just spent 10 centuries doing the Bakerloo monitors, news papers, route maps achievements etc. because I'm a bit of a completionist so obviously I spent quite a bit of time running around stations and I was constantly getting stuck on invisible collisions on the platforms, staircases, hallways that honestly felt like invisible passengers or something that the actual AI passengers were also getting stuck on and it was extremely annoying. Also to put the cherry on the cake I know most people probably don't care about this but I'm constantly stuck at 27/30 news papers because some of them don't count. Same happens with the flowers on Birmingham Cross City. If you're gonna make achievements that take people 10 years to complete at least have them work properly so we don't waste our time.