MAG
44 Achievements
449-549h
PS3
Triple Threat
Earn 5 Silver Cross Ribbons, 5 Master Engineer Ribbons and the Grim Reaper Medal.
3.2%
How to unlock the Triple Threat achievement in MAG - Definitive Guide
This one will also come over time. You need to be a Medic, an Engineer, and a Killer. A Silver Cross Ribbon is earned when you heal 250 HP in a round, a Master Engineer Ribbon is earned when you repair 250 points of damage (every building have 100 points), and the Grim Reaper medal is for getting 2,000 total kills. Getting the Improved healing and Improved repairs skills really help to get these ribbons.
For further information: see Ribbon guide (#18, #19) and Medal guide (#1).