I don't think you should waste your time. I didn't understand some of the plot - or there wasn't a good plot to understand.
There is a lot of action, but some of it is filmed in such a shaky camera or quick-to-pan-or-zoom shots, that it's also not so easy to follow.
Still there are cool things about the film and the lead assassin's character that are pretty cool.
Still, as a writer, the movie gave me ideas of how to serve my own story better than what had been done here.