Human: I can not recall, probably around 200 but not over, I do not spam luci and I think I would remember that.
Alien: 219, and the first/only person to ever get over 200 on alien.
I will try and get the sshot from evil_duckling. (map was karith, human base was in ele room and they moved in s1 after we destroyed their base in cooridor outside the default)
On alien best kills/minute or /second was 148 in 29 mins, roughly 5/min or 1 every 12 seconds, but in fast games I have gotten 1/10sec or 6/min.
Another interesting game I had the other night on human was 31 kills and a dozen eggs in 14 minutes with 0 deaths. Perfect game.