307100!!! That's from TSF and I played the TSF episode before all the other episodes. Or it could be from a custom episode like RHG, TR or TLW. It's been a long time since I played singleplayer so I honestly can't remember. To get astronomical scores like LittleFreak's (btw, ever considered joining TF? ) you would have to kill a lot of respawning enemies and that would take such a long time.