So ok this is my take. Every year the big studios are handed scripts, many scripts and many are rejected. How many scripts with the whole "trained assassin" have we seen? Netflix must get thousands with the same bloody main plot, and reject them. Warner Bros, Sony probably do too and keep maybe 2 out of a hundred. Netflix, on the other hand, get (say) a hundred of these assassin scripts and keep 50, and seemingly work through them making movies to fill a need. They love them. They tolerate much more, lame and average scripts, than you would expect a movie studio to... but then they are essentially a TV station, and have more time to fill.
This film is your typical double-hard assassin movie. Well made - I like the lead and supporting cast - plus it looks good, is watchable, but ultimately is generic and predictably unoriginal. The plot will have no surprises, and will be the least interesting aspect, but it won't offend you too much either. Maybe as a slightly older person, I have seen too many movies like this to be involved and excited by it. Were I half my age, with less experience of such film, I might have better things to say. As it stands, if you like this kind of assassin getting revenge movie, you'll have a good time. Just do not expect anything new here.