Weapons in Tomb Raider 3

Pistols
You start with these and they have unlimited ammo. Always use on unarmed enemies which can not get to you.
Shotgun
Powerful but has a slow reload time.
Uzis
More powerful than the Auto-Pistols with a faster out put. Save your ammo for the hard to kill enemies.
Harpoon Gun
The only weapon that works underwater. It is very hard to aim. Lara fires 4 harpoons in a row and then reloads. It is usually better to clinb out of the water and shoot with pistols from there.
Grenade Launcher
Good for hard to kill enemies save ammo until the very last levels.
Desert Eagle Pistol
Lara hold this weopon in two hands. It can take most enemies down in two or three shots and has a faster reload time than the Shotgun.
MP5 Assault Rifle
Targets well at long range. Fires in bursts and is quite powerful.
Rocket Launcher
Fires poverful shots which will kill most enemies in one shot. You get very litte ammo for this so keep it until the very end.