Since the dinos can not pass through a shutter,
use them to your advantage. Close each shutter
after you pass them. This way, if a dino appears
in that particular area, you can not be attacked
(unless, of course, you are on the same side as
When at a puzzle, before changing it, around push the button. Nothing will happen, but if you watch the colored lights they will turn on in the order needed to solve the puzzle.
There are some areas that you will only pass through once or twice in the entire game. Killing the dinos in these areas is pointless; more importantly, it is a waste of ammo. Use the weakest tranquilizer dart on it/them, and move on. This way, the bullets/shells/slugs/grenades are available when you need them. Once you get unlimited grenades (by completing the game three times under the normal difficulty setting), you
can kill those dinos, without wasting ammo.
Third Energy Key Card Early
Before leaving the jungle, you can retrieve the card from the shallow stream. This way you will not have to make a return trip after finding out that it is needed.