ACHIEVEMENT - HOW TO UNLOCK Art of Combat - Defeat enemies of flesh and bone. Beachhead Established - Win some missions to get feet wet. Blinding Pain - Blind and stun enemies. Boot Camp - Knowledge is power! Casualties of War - Kill! Kill! Kill! Cautious Approach - Use cover and survive longer. Easy Money - Horde a lot of credits. Experienced - More skills are better than few. Fire in the Hole! - Grenade fragments makes enemies bleed. First Blood - First successful mission turn boys to men. Leave No One Behind! - Deploy and extract a full team. Liberty Comes at a Price - Buying credits is totally OK! Make Them Bleed - Pepper more than one target with bullets. Mission Accomplished - Win a lot of missions. Multi Kill! - Kill multiple enemies in a single burst. Multi Tasking - Dual wield-r-us. Pinned Down! - Crossfire is good. More is better! Superior Military Intelligence - Unlock everything. Technical Advancement - Unlock a little of everything. They Never Saw Us Coming - Swiftly defeat the enemy. We Want YOU! - Grow your squad. Who Needs Guns Anyway? - Perform slice and dice kills. Who's Tough Now? - Defeat enemy elite troops.