It was alright until near the end...then the music went a bit off track and didn't get back into the spirit of things until the end. The battles were impressive and the plot...mostly made sense.
Still waiting for Part Two (and to see which ending they go with by then).
However, Yamato 2199 and soon Yamato 2202 are much better (especially musically). I suspect when they get back to Part Two of this film series they'll start to incorporate elements from Yamato 2199...especially since there are design elements of this film showing up in Yamato 2202.