They also bring back Rain from the original film and Carlos, who died in Extinction, but the idea of cloning bad versions does work for me.
I enjoyed the film, the new monster was an uber-evil dude ;) and the setting in Kamchatka was a bit "Ice Station Zebra" but it worked well.
Fight scenes and shoot outs well designed, especially the chase through Moscow and the end fight with the evil Rain is good as you get up close and personal with the damage control.
Starting the film in a retrospective view might be confusing, but again I felt it worked.
One problem-which is hotter?
Jill with short dark hair in Apocalypse or the new longer ash blonde look?