Hidden Bonus
     Start  a  new game under Easy, press ~ to display the console and
type RIPLEY_WAS_HERE.

     Tip: Don't toss flares on the ground. Placing them on the ceiling
or walls greatly increases the illumination they provide.

     Tip:  Keep  a  very  close eye on how much ammo is remaining in a
clip.  If  it's  less than 20 rounds, go ahead and empty the clip--you
don't  want  to  be  forced to pop in a new magazine while an Alien is
clawing you to death.

     Tip:  Want  to  behead  an  enemy  when  playing as an Alien or a
Predator? Press and hold the Primary Weapon button, then release it to
deliver a literal coup d'etat.