Having watched through it twice now, first time raw, second time with subs, I say I am satisfied with it, but not very glad how it turned out. It is mostly aimed at people who are familiar with Berserk, because tons of content was crammed into one hour and quite a lot was left out or modified, leaving newcomers overwhelmed/confused. Guts' childhood was not brought out at all, except in one dream sequence. Zodd had only, what, 5 minutes worth of screen time? That encounter felt really awkward in my opinion, because it happened too suddenly. Character development and relationships were non-existent and it was hard to feel for characters.
CGI wasn't as apparent as it was in the first 10 minutes video, quite opposite, it looked pretty good from that point on. Monster Zodd looked pretty terrible tho, CGI was very apparent then. Other than that, it's a pretty solid movie, nothing special tho. Voice acting was nice and soundtrack was also great, although it wasn't by Hirasawa. I'll be expecting the next two movies and hoping they will continue with the Black Swordsman arc.
It would be better to introduce someone to Berserk series with the anime or the manga but not with the movie in my opinion.