Unclear parts and final showdown
I really liked this movie. Yes, the criticisms are warranted; the plot is convoluted and unclear at times. However, I loved the dialogue. I especially liked Oscar Isaac's character. I thought, this is a person I'd love to know and talk to, if you take away the homicidal sociopath part.
It made a lot of sense to find out that the guy who wrote the script and directed also wrote The Departed. Both movies seem to rush or gloss over crucial plot points, leaving me confused and having to piece together what happened later. The stories build on an unclear foundation, and that is a failing of the storyteller. However, I really like The Departed too.
Here's an example: I don't know why the main character thinks the Oscar Isaac character wants to kill him from the start. Turns out he does, but why would you think that? Just because the man carries a rifle? This is America. Because he philosophizes about the nature of existence? The character just seems to take a big leap in initiating that first confrontation.
The climax of this movie makes no sense. These two guys both want to kill each other, and I understand that Isaac's character wants to make a game out of it, but he just sets his gun on the table in front of the other guy?!!!!!! What did he think would happen? And his game of Russian Roulette would have put the gun in the other guy's hands as well. What a lousy way to end the movie. After this whole game of cat and mouse, the guy basically just gives his gun away. Come on, brother!
I still wasn't all that disappointed, because WHAT a movie is about doesn't matter as much as HOW it's about. In other words, things like a movie's style and tone. In this case, I loved the dialogue.