So far, I think it's only score increases (the scores themselves aren't checked yet), different rewards (xp/gold) and pretty telegraphed choices let Rick do his thing with your boss/try to compete; stop your mom's boss from harassing her/let him; go to the club and cheat/don't; continue to go along with the blacksmith's harassment/don't. Oh, and the only talents currently used are Persuasion 1&2 (Heracles 1 increases some combat stats).
When the game gets more complex, and if no one wants to do a "proper" walkthrough/mod, I'll probably do an ASCII walkthrough again.