It's the complete lack of art direction.
I mean, I don't see anything to support that lol
Remember, lack of liking art, is not the lack of art sir. This just means it looks lame or you don't like how it looks etc, from what I've seen, art direction based on its basic idea 100% exist here.
As in, the soldiers have design that would support a direction being made to have them include iconography of a solider, this would be art direction.
The location itself, like the paintings, hardwood floors, it seems its made to look like a rich, upper class type person lives there or rich company or museum or something, this would be part of that art direction.
The lab looking completely white, like sterile, lab suits, all the equipment, this would all be part of that art direction.
So.....something cannot lack art direction, as even Pong, one could argue its notan look is its art direction even in the most simplistic form lol Even "lacking" one, can be its own direction....as in having LESS of something like if the game was a person in white room with little to objects, that can be its own direction.