Any excitement generated by the original has evaporated and the resulting farrago will only appeal to the most easy-to-please fight fans. Our heroes only have six days to prevent the evil Kahn merging earth with "the other realm" to become supreme ruler of everything.
It would miss the point to complain that the plot is nonsensical drivel peopled by paper-thin characters and a paucity of ideas. But where Annihilation really falls down is in the fight sequences - its raison d'etre after all - which are poorly edited, monotonously choreographed (peppered with ludicrous backflips and somersaults) and enhanced with CGI that would look dated in an 80s pop video. To add insult to injury the whole thing is wallpapered with irritating techno, a lame attempt to pump up non-existent excitement levels.
On the acting front, only Remar proffers anything like a performance, most others seem happy just to flex muscle and grimace.