Guerilla Cambridge talks Killzone Mercenary

In a PS blog interview, developer Piers Jackson, highlights the plot, mechanics and some of the grunt they managed to get out of the Vita when transferring over the core technology from the PS3 edition of Killzone 3.

Key to those worried about a short experience, is this nugget:
We have nine single player missions. On average, on a first-time play-through, they’ll take between 40 minutes and an hour each to complete. So, it’s a lengthy game. It’s got a full narrative too – every mission brief is set up as a full story.
On the whole, the proper development time should see this game safely at the high end of the Vita's most-wanted list. While the CoD team did their best in a few months, it proves that nothing beats proper preparation and planning.