Good start, but then it gets ruined

It's the kind of movie you'll want to see a second time with someone who hasn't seen it yet, to remember what it was like to watch it for the first time.

There is, somehow, an interesting story here, as well as some good acting. There are also some good scenes

Yes, absolutely, there is fun to be had, as well as many, many things to go boom, all amid an atmospheric urban jungle.