Playing as a nomad, a game tester managed to play Cyberpunk 2077 for over 175 hours without reaching the end credits. However, he did this on the hardest difficulty setting by playing more stealthy than usual while looting everything and using every single feature this upcoming game has to offer.
https://www.notebookcheck.net/Cyberpunk-2077-Over-200-hours-of-gameplay-needed-to-reach-the-end.505796.0.html