Finally had a time to play new ADOM on Steam and observed something interesting. Not saying it's a bug, but kinda hilarious.
My human druid crossed the animated forest hiding in Darkness and I got Treehugger achievement after that: "Went through Live Forest not attacking any trees" :)

Well, I killed a couple of .... something, but how can you suspect a respectable druid in cutting trees?! Of course I should get that archievement! :)

+7 increase to Woodcraft afterwards should have been purely from... breaking doors?... I don't know ;)