Weapons in Tomb Raider 2

Pistols
You start with these and they have unlimited ammo. Always use on unarmed enemies which can not get to you.
Shotgun
You also start with this. Powerful but has a slow reload time.
Auto-Pistols
More powerful than pistols with a faster out put.
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.
M-16 assult rifle
Powerful long distance weapon
Grenade Launcher
Good for hard to kill enemies save ammo until the very last levels.