The good stuff
Starts off pretty well, but it seems that Carnahan has lost some of his flair. Truth be told, I'm not the biggest fan of the "day repeating" premise, so Boss Level was fighting an uphill battle from the start. But its biggest problem is that it pays way too much attention to the plot, whereas the action is by far its most interesting element.
Roy wakes up every day being assaulted by a variety of hitmen. There's no escaping them, whenever he gets killed his ordeal starts all over again. A good five months in he discovers his wife might be the root of his problem, with infinite time to spend he decides to find out what she got him into, hoping to find a way to stop it.
The action is pretty explosive and over-the-top, the styling is pleasant, characters are larger than life and the pacing of the first quarter is fine. But then the film slows down, we get flashbacks with endless explanations and the pacing drops considerably. I could've done without all that, but at least the film's repetitive nature didn't ruin it completely.