Crazed Karka Queen and Lair-Light Foot
you can get the light foot by avoiding triggering traps in canachs lair the solo one. I got it so it is doable.
As for the Karka Queen I don’t think her events are active yet. Least I haven’t seen anything about having to defend encampments other then the usual.
Dev said that the meta event is not active yet and eluded to the patch notes might be premature.
Edit: See this post. Not active until next week.
Thx for information guys!