The essential guns for Lara. Not very powerful, but they have unlimited ammo.
Shotgun
We won't find many shells for the Shotgun, but this is a powerful weapon when used in close combat.
Automatic Pistols
The most useful weapon against animals and humans. If we discover everything we can, then we won't need to worry about ammo.
Uzis
Effective against everyone and everything. Rapid, powerful and we'll find plenty of ammo.
Harpoon Gun
Perfect against barracudas, sharks or divers (obviously) but almost completely useless on land.
M16
Rapid and powerful. The only disadvantage is that it can't be used accurately during running so we have to stop and shoot to defeat the target.
Grenade Launcher
One or two shots are enough to defeat almost everyone. Highly advised to use against enemies nearby. However we won't find many grenades along the journey, so use them wisely.