Video game writers have become much more adept at using death as something more worthwhile than a dramatic plot device over the last decade or so. The starting point in Tetsuya Takahashi’s “Xenoblade Chronicles 3” is a frank admission that no one knows how to handle grief, honor the dead, or live what amounts to a good life, ThunderLotus honed in on the specific moment of farewell and the pain of dealing with the physical and emotional space the dead leave behind. When new studio Sandfall Interactive first announced “Clair Obscur: Expedition 33” and promised a “dark and mature” story set against trailers filled with blood-stained faces, grim expressions, and people wailing over fallen comrades, it all seemed a bit gauche and shallow. It isn’t. “Expedition 33” is one of the most sensitive handlings of grief and artfully crafted stories in the medium, though it does little to prove that in its early hours.