I would like to point out that technically Kratos albeit inadvertently did not destroy the world per se, he saved/liberated it by killing the gods who held an iron grip on it and freeing it for mortals to rule.
Think about it, he single handedly killed off and slaughtered every single monster, demon, chimera, etc in Greece, he killed Hades who held the souls of the departed in bondage. He killed Poseidon who controlled the seas to his whims and now the oceans and seas move according to nature's laws yet again, Apollo restoring the natural night/day cycle, etc leaving alive Demeter and forgetting her greek name Venus god's who are important for their contributions and not their tyrannical control.
Oh and killing the sister's of fate making is possible for mortals to control their own destinies, seriously, there's as much of good argument here for alternative character interpretation for Kratos actually in his blindness helping Humanity be free of the god's tyranny.
Now we just need to sick him on the Babylonian and Egyptian pantheons and away we go, all set.
Oh and the Titans who would've probly wiped out Humanity since they don't like us very much.