Before when I went in the discord they explained to me that Karryn's prison is like their 2nd or 3rd attempt at a game.
The other games got stuck in feature creep limbo and couldn't come out, now taking that into consideration you can probably see why Karryn turned out the way it did. As many said before including you this is an incomplete game with a lot of holes.
Rem literally Admits that on level 2 he had a secretary job in mind and that's why you could go into the office. Heck lets not forget the corruption system that's still in the game despite it being completely useless. It would as someone said before be huge copium to say that this game is complete, especially when the dev himself admits that it isn't, yet at the same time says it's done. My guess as to why Karryn's prison turned out like this is, because Rem couldn't focus on the original premise and concept of slow corruption. The feature creep that seems to plague him in particular forced him to release the game early in order not to be stuck in development limbo like other games. If this is the case, which it seems to be it worries me for future projects from him. Also before people says there is slow corruption in this game. I have played it the only thing here is a grind between Normal Karryn and softcore slut Karryn. There are barely if any lines that are indicating the change in Karryn besides number valves. The same problem is also reflected in saying that Karryn isn't being raped but wants and allows this to happen to her. Check the dialogue the prisoners initiate everything and constantly harass her. The only thing that indicates to us that Karryn wants anything is again the number values. This shouldn't be the case it should be represented in the dialogue as well. You could honestly go on for hours about what's missing or what's wrong with the game. I don't want to do that and want to try and be positive that they will nail everything on their next game. Hopefully Rem opens up to taking feedback in not just bugs and errors but game mechanics as well.