I think they had big plans with the story & the game itself, but not enough time.
They wrote a story, made the levels, made the scripts, recorded the voices, made the animations, made upgrades to the engine, tested it & finally sent it to QA. In just 13 months mind you.
I'm 100% sure if they are given some more time, they can really make a masterpiece - But if the publishers keeps screaming at the devs to finish at this date at this excact time, it can be tough
Edit: K2 is OK, I just want bigger outdoor levels next time Freeedoooommm!