i agree with op, there was no unique 'moment' from halo 4, what i mean by that is, is that the 'moments' it did have was taken straight out of another halo game, it could be an entire level like shutdown was a repainted version of new alexendria from reach, even the tiny moments like when boarding the lich felt like the halo 2 scarab. the story was terrible i felt, the thing i found most appealing about the forunners was the mystery behind them that the only thing left of them were their creations! but now showing everything about them just ruins that ... its a real shame i feel.
i do enjoy the multiplayer though