Fallout 2:
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Soloed a bada**, kicka**, male character who basically murdered everybody and turned every single town into a ghost town( except his hometown, the Enclave took care of that).
Notable achievements... ...
Successfully assassinated all four of the criminal bosses in New Reno.
Attained more than -9000 karma by the end of the game.
Earned the title Childkiller and Berserker.
Slaughtered everybody in the enclave by applying liberal amounts of Bozar and Vindicator ammunition.
Accumulated so much arsenal that he had to litter the streets of San Franciso with piles of ammunition( ran out of space in the car boot).
Capable of killing Enclave soldiers with a single punch... thanks to the Slayer perk.
Nuked Gecko town and caused Vault City to be radiated as a result.
Assassinated the vice president in NCR( before proceeding to kill the rest of the population).
Gave Cassidy a heart attack by injecting him with drugs.
Ran around New Reno with a Flamethrower, turning the pimps and gangsters into cute pile of ashes.
Oh... and his name is Lobo.
ToB:
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Completed the game with a solo Sorcerer without needing to rest. Took about 11 days plus, including the whole of Watcher's Keep.