Archaeologists are guys who for seemingly no reason search dangerous tombs, forgotten cities, and other random mysterious locations. While it is commonly thought they are in it for the treasure they rarely leave with anything as they run from site due to tribesmen, Nazis, dinosaurs, horrors from beyond the stars, etc. They commonly have a bullwhip and pistol. Being one in any setting involving Cthulhu (with the exception of Eternal Darkness: Sanity's Requiem) invariably means a slow and painful death at the claws of monsters beyond reason.
You should be willing to beat things to death with a shovel or slit their throats with a trowel before considering this career in an RPG.