GameCloud: "Honestly, Killzone Mercenary is a fun “Killzone Experience”. However, it is also strung together by a forgettable plot that is unjustifiably short, and complemented by a multiplayer mode that has less life than a ghost town. Fortunately, there is a Contracts Mode that will provide additional challenges, and this does help to justify at least some sort replayability, and naturally, it’s also an undeniably great demonstration of the Vita’s power. However, if portability isn’t that important to you, I think you’re probably better off waiting for Shadow Fall. Unfortunately, we can only recommend to enthusiasts."