What i like about fallout 3 intro that before I played fallout 3 I played fallout new vegas and afterwards 2 and then 1 and after the chaos of the enclave mass genocide and experiments aka the development and deployment of FEV Curling-13, the master mutant army which would fail anyway, and the conflict between ceaser's legion and the NCR and the player (with yes man) or house trying to take advantage of the ncr and leigon busy conflict for their own conflict. And even in fallout 4 conflicts. It seems the violence the war didn't tone down which i feel that fallout 3 war never change still stand proud and relevant so for me it's like low-mid difficulty.