Very short.. keep for a rental
The gameplay constantly wants to see you bounding around like a gibbon and performing various air-gymspastics, and I for the most part found this fun, but some of the time you'll be in precarious environments where you'll jump straight off a building or something similar.. this is annoying because you're supposed to fling Rubi around like the demented gung-slinger she is and throwing yourself off a high rise building takes away from the fast paced feel of the game.
The story is basic and only has a couple of moments of interest, but even then you'll curl your lip and be like 'dont give a f**k.' Also, it's really short, and on your second run through it's possible to complete it in less than five hours.