Inessential but very enjoyable if you like training montages (for which my appetite is infinite), excellent performances, and delightfully manipulatively edited climaxes,
but important to note that BLEED FOR THIS, for one great scene, contributes a unique entry to a favorite subgenre:
movies in which metal (usually bullets or shrapnel) is removed from the injured protagonist and then the surgeon *clinks* it into a bowl. In this case, it's skull-screws. (spoiler) You simply can't film a person having metal-projectile wounds cleaned up without also showing & amplifying the sound of the metallic chunks metallically landing in a wee container.