Give it to Hideo Kojima.

I love their games but the stories are normally painfully abstract and difficult to piece together.

I disagree, Think this developer is the has the most overrated worldbuilding out there. People are just willing meaning on whatever they make. Just a cheap trick where gamers, starving for actually decent storytelling in gaming are walking straight into scrapes to fill a void.

I would grade something as portal 2, or dwarf fortress as literary vehicle vastly superior

From Software games work because they force the player to fill in the gaps of a non existent story.

They are always highly gameplay focused, basically not even possessing a story you could follow.