If you pre-order Resistance: Burning Skies on PlayStation Vita from Amazon, you’ll receive some special bonuses for the game. The bonus includes the Multiplayer Booster, which enables you to have an advantage over the competition by starting you at level 5 in multiplayer, enabling you to unlock the first tier of weapon customizations, which is ‘The Hedgehog‘.
This can be used as an area of effect weapon of destruction or placed like a landmine for unsuspecting victims to stumble upon as well as your first weapon upgrade. Also included is 3 avatars, Riley, Ellie, and a fearsome Chimera. The PS Vita lock Screen Theme bonus allows you to customize your PS Vita lock screen with a Resistance theme.
Via PlayStation Blog