There are several combat sequences in this movie, but most of them are neither brutal nor bloody. Mostly hand-to-hand combat, fist fights, mild kung-fu fights, and some use of varied weapons too (especially sword fighting). Some specific deaths, however, are bloody.
Defeated men are stabbed and killed after a confrontation (not graphic).
A man has a hatchet thrown into his face, and we can see it clearly hit him, even though we only see it from behind and briefly. Some blood sprays.
Two men's throats are cut and blood squirts briefly (no graphic wound shown).
A man is stabbed in the eye and dies, blood trickles. This is the most disturbing scene, although we do not see the actual stabbing nor the bloody wound, as they are covered by the killer's hand.
A character is seriously wounded and beaten down. He also gets an hatchet in his chest, and later on removes it. The whole sequence is not extremely bloody, but rather intense and lenghty.
A man is stabbed in the throat and dies, blood pours out.
A samurai fights with a man; he has some bloody injuries, but manages to kill the man by impaling him to a tree with his sword.
Two samurai have a sword fight, and one of them is killed by the other.
A samurai shoots an arrow to a man (no injury).
A man fights with two men at a bar. One of them dies.
Blood splatters across a screen.
A girl bites a man's lip.