I've had my karma go from 960 to 330 from 1 kill many times on this server. I have demo'd it practically every time, though later ones I still have since my external hard drive, with older demos from back when we still had dm_attackhouse_christmas, died and those demos were lost. The latest time was only 2 days ago.
Xrain: It is odd though that many users are having issues with the hitboxes, even though they are unchanged.
Terminal essentially you lose half of whatever karma they have, however as your karma gets lower it is harder to lose karma, in parallel as it gets higher it is harder to gain karma but easier to lose. So in theory the most you can lose from killing a 1k karma at 1k karma yourself is around 500 give or take 50. (This is purely observation, but with the amount of times I have low karma every day, it's a pretty educated observation.)
