I stumbled upon the Heavenly Sword blu-ray more by accident at the bargain bin of a local electronics store. Being an ever hopeful viewer of video game movies (despite many previous experiences with the genre), I've looked up some gameplay videos ("that's actually pretty cinematic") then went out and bought the movie. Since I've already committed the error, you may not need to repeat it yourself.
It's bad. And sad. If I understand the closing credits right, this movie was made by a small team (some 20 people?) on a shoestring budget of 6 million, and I generally applaud small independent productions, even if they aim high and end up .. not quite as high. Enthusiasm covers a lot of cinematic sins.
Heavenly Sword however was a wholly different thing, especially compared to the game it originates from. The game has mo-cap actor legend Andy "Gollum" Serkis and the late Terry "Discworld" Pratchett's daughter Rhianna at the helm, and impressive graphics for its time and hardware (2007). It's a mixture of hack-and-slay, sniping, quicktime events and a whole lot of action-adventure tropes rolled into a playstation title.
The movie is significantly less than that. Its storyline is at times disjointed, its animations and environments are just bad compared to the game, and the framing and editing of scenes is a step down from the game's cut-scenes as well. I needed to watch the game footage to get the movie's storyline in order, and noticed that the game manages to elicit more emotional response than the movie.
How a movie that came out in 2014 manages to look worse than the real-time graphics of a game from 2007 (with the assumption that - since it's an official franchise product - the producers must've had access to Sony's graphics and animation data that the game already had 7 years earlier), is completely beyond me.
Lowlights are the three boss fights, with the showdown against the water witch being the absolutely worst, both in terms of action and in terms of graphics. Some more doubtful design decisions are sweeping camera moves during quiet "character moments", and turning the moats of the tyrant's impressive fortress from the game's exaggerated-yet-realistic water into ludicrous lava.
Using the gameplay as a template, shortening and framing the combat scenes cinematically and rendering the cutscenes with more advanced and fine-tuned facial animations and cloth/hair simulation could've made this into an impressive production.
As it is, it was interesting to watch, but definitely not enjoyable. Can not recommend this. 3 / 10, and this includes a pity bonus of +1 point.