Spoilers ahead:
from what I remember, your choices are...
1) Siphon the life of woodland critters, killing them all (and permanently losing a talent point if you have pet pal, like goddamn I hated that)
2) Eat a voidwoken heart
3) Kiss a succubus
4) Deepen your connection to the trees
5) Steal the life-force of a legion of spirits, erasing them forever
Now, of those, 1) and 5) are the easily identifiable as evil, but 4) is completely innocent. In addition, 2) and 3) have no negative effects on others, but might have RP limitations.
Given that you only need two, seems pretty easy to remain "good".