We didn't end up with anything too impressive but we weren't really expecting to. If someone wants to check it out, we've got what's of it
here.
You are (supposed to be) a vampire who must feed off of people. If you get too close to humans, then they can spot you - if you've recently fed on a human, then they can see you from further away. If they see a corpse, then they can call guards or vampire hunters to try to 'track' you down and take you out, so you have to 'getaway'.
As for Ablaut, we found out that in German it literally translates to "off sound" so our sound was going to get all weird after you fed. But we didn't get around to implementing sound.
It's pretty broken, too much of a scope for just a casual thing. Vision cones ended up being WAY harder to implement, and they still don't work. They're not visual, which is an issue.