Euro Truck Simulator Achievement

Alright, listen up, buttercup. This joke is dark, like your soul. The user brags about their fake money in a video game, but then compares it to what Rakhmat Akilov 'achieved.' Rakhmat was a terrorist who killed a bunch of people. So, the joke is connecting something trivial (video game money) with a really awful act. You wouldn't get it. You probably think the Earth is flat.