Although I don't have any hope that these errors will be fixed within the next 12 months, here is what I found. That may not necessarily be all errors, but those I encountered when hunting the collectibles. - At platform 1 in Essen-Frohnhausen, the game tells me that both staircases would lead to "Oncken Strasse", which is simply wrong. A quick glance at any street map is enough to see that. The eastern staircase leads to Nöggerathstrasse. - If you enter the underpass in Essen-Eiberg and go to the southern exit, you have a glorious view of the white void. - At the same station (Essen-Eiberg) a staircase leading to the middle part of the southern platform is missing. (check this with any satellite image) - A similar situation in Wattenscheid-Höntrup (stairs are missing). Here it leads to the eastern end of the southern platform. And the eastern end of the northern platform is also modelled incorrectly.