This achievement is intended to unlock after two total hours of gameplay, but the code for it is positioned in the Steam.Update() function after the check for the "Mioew" achievement, which requires a score of 1,000,000. As the check for this other achievement immediately returns if score is below this value, the check for 2 hours can only be reached if that 1mil check succeeds. In theory that check could be avoided by simply staying in a menu where the score check (and thus the return) never happe...