Many Steam users who played Armored Core 6 complained about the game being too difficult. In particular, some did not even manage to get past the first AN12-NS helicopter boss, which is why users gave the project negative ratings.
Despite this, the project at the time of writing the post has very positive reviews on the site. In addition, it is worth remembering that the game was made by the FromSoftware studio, in which absolutely all titles are hardcore. Armored Core 6 is no exception, although the game does not belong to the souls series.
The creation of Armored Core 6 was personally led by Masaru Yamamura, the lead designer of Sekiro: Shadows Die Twice, as well as the designer of Dark Souls and Bloodborne.