Zac Elawar from Capsule Computers wrote:
"Killzone: Mercenary is hoping to buck the trend and prove a legitimate first-person shooter on the Sony PS Vita. Although my interest in the franchise has never been high, I must say that it was piqued by the prospect of a solid FPS on the handheld, so I had to play it for myself to find out if the hype is justified. [...] “Two years later and the theatre of war has moved to Helghan [...] Now, we stand poised to end the Helghast threat for good”. The preview code we received featured the single-player mission, ‘Lightning Strike’."