Fallout 4 Incomplete? no sure there are a few bugs but it has literally 100+ hours of gameplay to it, a large expansive world filled with more content in a small area than most games in total. of what I have seen very few major bugs.
only ones I have seen are frame rate drop caused by dropping your entire inventory one at a time onto the ground (too many sprites), frame rate drop caused by carrying around too many items (my total weight was over 5000 lbs), and one game crash that was caused by myself literally trying to break the game in fun ways (trying to glitch though the map to see what happens when you enter a place that requires a loading screen). other than that the only annoying glitches I have seen are npc's stopping dialect when touched by something (fix: re-talk to them), being able to see the outline of cars submerged in water without being in the water, and (someone may call it a bug but I do not) bad companion AI, namely dog meat, that is unpushable and can wedge himself into a narrow corridor so you cannot pass (fix: talk to them and command him to go somewhere and they will move).