At the beginning of the game, everything will be normal, with the same cutscenes in the character box, until you buy the first upgrade at level 10. At that moment, the first image related to the improved statistic will appear.
(Optional - if you click on it, the game pauses and shows the image in full size until you click again, and the game will resume.)
The game will continue as always until reaching level 50, where the last erotic scene reward will appear, and an achievement related to the statistic will be awarded. This last image, being the final one, may be something more special and detailed. If you go to achievements, a (new) tag will appear next to the logo. When clicked, it shows a gallery of images for the achiev