1. I'd like to know this as well. The main character makes vague references at different times to goals and aspirations of which I'm otherwise unaware. If the main character isn't just a blank slate for me to fill in as I please, I need to know where I can expect the boundaries to be.
2. It depends on what you mean by win. I'm considering anything that ends the battle without triggering a game over as a win (you still get experience). By that definition, I have beaten the male goblin (both by getting fucked and sucking him off), the female goblin (if you get fucked by her enough, the battle ends and she leaves "eggs" inside you that allow you to get impregnated), the harpy (hand jobs and blowjobs, no penetration), the wereslut (sucking her off, fucking her, and being fucked by her all end the battle without triggering a game over, the latter is the only one that really tries to make it seem like a bad thing), and I forget exactly how the ogre goes, but I've been onaholed by a couple and I'm still kicking. I've mostly gotten through battles without using a single damaging attack. I want to clarify here that what I put in the parentheses are things I've done, not necessarily all that's possible. Edit: I just found out that you can get orally "knotted" by the wereslut, and that does result in a game over, but I've definitely won the battle before by sucking her off, she just came before progressing to the "knot" stage
3. I was going to ask this as well, and I sure do hope so. Especially with all the gigantic cocks around. If you could somehow enlarge your own dick, just to have another hole to get fucked in, that'd be swell.
4. In response to a related question, Majalis has said this:
"In regards to animating every position with every enemy, or having static art thereof - we'll try to do as much as we can, but we don't plan to have everyone fully animated for all the things you can do with them (although there may be generic animations to cover the gaps). There'll definitely be more dialogue coverage as well."