Overall, the Hunter x Hunter anime covers a significant portion of the manga but doesn't include everything. Some character developments and subplots might be left out or presented differently for various reasons like pacing and production constraints.
In general, the 'Hunter x Hunter' anime follows the manga quite closely. However, there are a few changes in the order of events and some additional filler episodes to expand on certain storylines.
The Hunter x Hunter manga is unfortunately not complete. The author has faced various issues that have led to intermittent breaks and an unresolved storyline.
The Hunter x Hunter manga has indeed concluded. However, the ending might have left some fans wanting more or with mixed feelings depending on their expectations.