Undaunted by yesterday’s utter failure I began planning a more efficient route on my time attack of Half-Life: Blueshift.  At one point after clearing out all bad guys I left to use the bathroom only to return 20 minutes later with my dead corpse being raped by a headcrab that over the course of the last 20 minutes had rendered me limb from limb 2 health points at a time.  Note to self: Hit escape before using the restroom.