F.E.A.R. 2: Project Origin Message Board  

Because someone decided otherwise. The End

it may be that people are simply not following instructions either..

Launch the trainer first, then launch the Game and then Press F1 WHILE YOU ARE
ACTUALLY PLAYING THE GAME! Parts of this game do not load until you are actually
playing it, so press F1 to activate trainer from within the game. The game may
also, reload portions of itself between missions and during cutscenes. You may have
to press F1 again to re-activate trainer in these circumstances. If the trainer
appears to not be working, press F1 again to reactivate it.

best,
Cal