In Resident Evil: The Mercenaries 3D for the Nintendo 3DS, there are a few skills you can unlock while progressing through the game.
Here is a list of the skills you can unlock, and what you must do in order to unlock them.
Adrenaline – Complete mission 5-4 with a B rank or higher
Bomber – Complete mission 5-2 with a B rank or higher
Close Range – Complete mission level 4-3 with an S rank
Combat – Complete mission 4-2 with an S rank
Extension – Complete mission 4-1 with an S rank
Friendship – Get the Social Butterfly medal
Full Burst – Complete mission EX-6 with a B rank or higher
Giant Killing – Complete mission 4-5 with an S rank
Handgun Custom – Complete mission EX-1 with a B rank or higher
Handgun Technique – Complete mission 4-1 with a B rank or higher
Infinity 7 – Get 30 medals
Lucky 7 – Complete mission 5-3 with a B rank or higher
Machine Gun Custom – Complete mission EX-2 with a B rank or higher
Machine Gun Technique – Complete mission 4-3 with a B rank or higher
Magnum Technique – Complete mission 5-2 with an S rank
Maximizer – Complete mission 4-4 with a B rank or higher
Medic – Complete mission 1-3 with a B rank or higher
Revenge – Complete mission 4-2 with a B rank or higher
Reversal – Complete mission 5-4 with an S rank
Rifle Technique – Complete mission 5-1 with a B rank or higher
Shotgun Custom – Complete mission EX-5 with a B rank or higher
Shotgun Technique – Complete mission 5-1 with an S rank
Smart Reload – Complete mission EX-4 with a B rank or higher
Technician – Complete mission 5-3 with an S rank
Thunderbolt – Complete mission EX-7 with a B rank or higher
Toughness – Get the Like a Phoenix medal
Weapon Master – Complete mission EX-8 with a B rank or higher
