I've created a section for tracking your quest completion across files. Now when you go into the Information menu, you'll see a Quest Rewards section, which includes all possible rewards to be unlocked from quests. Note that Quest 3: Futanaris is not in the game yet, futa monsters are still unlocked from the start in 0.18, but perhaps not in 0.19! So enjoy them while they're easy to get ;3
Version 0.18 is almost done, just bringing all the new animations into engine, plugging them in, and fixing up some final bells and whistles before release.