What sucks is that the production design and the creatures look really cool, and a quest narrative set in this world could have been a lot of fun, versus the tiresome set up of let's go fight the bad guys, regroup, go fight them again, regroup, rinse, repeat. Also, for being half-demon, it's pretty lame that Keanu only really uses that ability to score free weapons, and realize that a creepy looking fox is actually an evil thing (anyone who's seen an Ylvis video knows that).
Ronin, consider yourself Accused (see what I did there?).
Of being dull.