ONE puts you in the shoes of one-armed John Cain, who awakens in a strange apartment building and discovers that his left arm has been replaced by a huge gun. Confused and rightfully upset, Cain leaves the building and is chased by mysterious military personal that are apparently intent on killing him. As Cain, you must work your way through wave after wave of police, helicopters, and huge bosses. To combat them you can either use your newly installed arm cannon, or rely on more traditional fighting weapons like punch and kicking combos. But you will also have to use your head, as most bosses cannot be killed by direct gunfire, and instead require that you use the environment to take them out.
Flip, climb, hang, slide, blast, and fight through five multi-level 3D worlds.
Rage up with unique RAGE meter.
Powerful assault weapons.
Vicious physical attack combos.