Train Sim World 2

If you want to do this achievement quickly then spawn on foot at Freiberg (sachs) at 08:25 and head onto platform 4. The next arrival (at appx 08:27) is a terminating train worth 8000 AP so when it stops climb aboard, enter the cab and save the game *before taking control of the train*.

Take over the train, collect the 8000 AP, quit the game and simply 'resume a saved game' to claim an instant 8000 AP each time. It takes appx 1 minute for the later 25,000 AP level ups on Series X (faster load times) so the achievement can be done in under 30 mins.

https://gamerdvr.com/gamer/boris-the-frog/video/151274569