I'm not entirely sure how the "spirit karma" system works in this game. According to the wiki it doesn't really matter now? Rituals work whether the spirits like you or not and they can't do anything about it, which is slightly lame.
In any case I noticed the sacrifice cap for specific rituals fluctuates. Hunter's sacrifice, for example, has a very low cap if you've just killed a bird or small game. If you kill multiple small animals before performing the sacrifice the cap seems to only take the last kill or two into account, maybe turn based? If you kill something large like a forest reindeer or elk the cap is huge. I've never actually tried to reach it, I ended up sacrificing 30 cuts from each large kill for good measure. The most I sacrificed was somewhere in the 50s. I always get the "You feel unity with the world" message the night following a large sacrifice. I'm thinking there's a hidden karma bar that "levels up" and resets to a fixed point, granting you a chance at a new ritual? Favor rituals drain that bar instead of add to it? If so it'd probably be good to bless all of your significant traps after a large kill. Not that it matters.. at the moment.
I got really bored with my character's daily grind. I packed up my stuff and settled down near Njerpez territory. Butchered a lone adventurer who was probably in league with the bastards and then ran into a settlement. There were a ton of aggressive people rushing me. I unleashed my dog, started throwing arrows, killed one before my dog died, got surrounded by Njerpez and passed out from a stab in my side. Guess I should bring help next time, that was really pointless.