Even though this is a first person shooter, don't run
in every room unloading clip after clip. There's a time
and a place, my friend; and until you figure out when those
times are, take it slow. Crouch behind objects for cover,
peak around corners for enemies, and try to take enemies
down from a distance.
Reload as often as you can. This isn't like Goldeneye; reloading
a weapon doesn't take a split second, which means if you're
in a firefight and run out of ammo, you're up the creek
without a paddle.
Strafing is your friend. Don't just stand around shooting,
the idea is to kill your enemies and take minimal damage.
Strafing between objects like crates or trees allows you
to quickly get a few shots in without the risk of injury
Above: Playstation cover art.