What do you think is the meaning behind Metal Gear Rising: Revengance?

[Jassassino]

Metal
[met-l]
Noun
Any of a class of elementary substances, as gold, silver, or copper, all of which are crystalline when solid and many of which are characterized by opacity, ductility, conductivity, and a unique luster when freshly fractured.

Gear
[geer]
noun
Machinery.
A part, as a disk, wheel, or section of a shaft, having cut teeth of such form, size, and spacing that they mesh with teeth in another part to transmit or receive force and motion.

Rising
[rahy-zing]
Adjective
Advancing, ascending, or mounting.

Re-
A prefix, occurring originally in loanwords from Latin, used with the meaning “again” or “again and again” to indicate repetition, or with the meaning “back” or “backward” to indicate withdrawal or backward motion.

Vengeance
[ven-juhns]
Noun
Infliction of injury, harm, humiliation, or the like, on a person by another who has been harmed by that person; violent revenge.