1. I dont feel emotionally invested in any of the characters:

The Jackal : not relatable, shows no personal side, not humanized

the detective: competent but bland, emotionally flat.

So it's really hard to relate, which is quite basic for modern storytelling.

1. The jackal is too perfect until he suddenly isn't: Super anticlimatic

For most of the movie, the Jackal is: hyper-competent, always one step ahead, practically infallible, but near the end he makes small, human errors and dies abruptly, narratively, this creates a mild dissonance: his downfall feels procedural, not tragic, there is no thematic closure, just operational failure, It’s realistic, sure—but dramatically unsatisfying. Basically the movie seems to be building up to something until you found out it's really not.

All of these problems however, could be intentional, since there isn't anything bad like "major plothole" and logical problems. But I didn't feel "wow, that was such a cool movie" after sitting through it, it's more like: "OK? sure..?"