Each character is attributed skill levels, an endurance factor and Leadership qualities. Attributes can be improved by successfully completing missions, and gaining medals.

• weapon skill : how quickly the aiming reticule closes and how tight it gets.
• stealth skill : decreases the chance that the enemies will detect that character.
• Endurance : keeps you character more active even after taking wounds.
• Leadership : provides a performance boost across the board for all members of the fire team.