Like a heroic medic in the heart of battle, Guerrilla Cambridge has zapped PlayStation Vita favourite Killzone: Mercenary with a free update today, adding two new multiplayer maps to the first-person shooter. The subterranean Tharsis Depot and multilayered Blood Gracht will be instantly familiar to franchise fans, as these layouts have also appeared in Killzone 2 and Killzone 3.

You’ll need around 167MB of free space in order to download the patch, or approximately 526MB if you’re yet to install any previous updates. Considering that this title once played host to fixes over 1GB in size, we’d say that that’s an impressive improvement. Is your bloodlust gagging for some more Guerrilla Warfare? Inject us with Petrusite in the comments section below.

[via community.killzone.com, computerandvideogames.com]