What you asked for was a way to quickly get back to the hentai scenes, and that's done through the "masturbation" option in your room. You can replay scenes as much as you want after you've unlocked them (even turning off your computer is ok). No codes required, but you do have to legitimately earn to view.
On donations only, it doesn't work. We have tried asking people for donations for a long time now and received very little compared to what we're receiving now that we're charging. Some people even donated because there's a price to the game now.
"Let the ones who want to pay, pay. People who can't should get it for free" is a good spirited mentality. However, statistics show: People don't donate anywhere nearly as much as they're willing to actually pay. Most independent game developers charge for their works because they know this, and well, more money means more games. I'd make it free if it meant that I got more money, but it's clearly not the case.
As for the damage only being applied to the clothes instead of the body, well... The idea was to implement a "strip poker" type of game. Winning equates to reward- girl stripping. No, it's not realistic, but it's way more enjoyable for the user to not see blood. This issue has been addressed, most people agree.
As I could see, the game engine got way more complex, having at least six skills and two item slots. While it means more room for combinating stuff, it can also lead to a more complex game. And if someone just wants to ... see some fine nude women, then it's better if no BASICS are standing between that person and those women. AD1 got around this issue neatly by using those cheat codes for the main characters (but I'd appreciate such a cheat for Svetlana and Oriana too), I guess we will have such a convenient solution for AD2 too, right?
I remember seeing my game at a korean website. They discussed the game in their language and just cheated to get to the goods. It's true, AD1 was played by a wide audience, some of which do not speak very good English. This second game is much more of a game than a simple visual novel that the first one was. In AD1, all you had to do was buy items/train magic/strength. AD2 is a game that I want to move forward on EVERY level, and this meant having to leave this audience behind. As for the player that just wants to see hentai, they're not really players. Free Hentai is all over the internet, it's my belief that people play these games because they want more to their hentai, be it story or gameplay.