Is a great point of the game, using darkness as any other environmental hazard, and, of course, forcing the use of tools to go around it.
The other way around is as stupid as skyrim, the game have torches, magic lights, nigh vision powers, detect life and death spells... But every time you enter a tomb that is suposse to be sealed for centuries it's full of light torches, candles and light fires (fortunately skyrim have mods for it, but it's a great flaw of the base game)
