These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
The first release got no age restriction in Germany. The designer was rather unhappy about this, since it meant that the game frequently ended up on the kiddie game shelves, despite the fact that it's content and humor would be above the heads of most kids. For the Special Edition, developer's commentaries were recorded in which the developer swore a lot, said "fuck" a couple of times completely non-sequitur and names masturbating as an option to spend an afternoon. He succeeded: the Special Edition has an age 12 and above restriction.
Jerkass Woobie: Edna. No doubt she bullied Alfred when she was a kid, but her behavior was common in children and had a chance of changing her ways when she grew up. It's easy to feel sorry for her after what Dr. Marcell has put her through for ten years. And after the last memory scene, she clearly is shocked and remorseful over killing Alfred.