Defeat 30 enemies with the Arm Micro

Defeat 20 enemies by shooting from the hip (without aiming with L1/R1)

Defeat 30 enemies with the KAL 7

Defeat five enemies in a row using stealth attacks

Make five enemies drop their grenade by shooting them

Received all 4 weapon efficiency ribbons

Collect 20 Dogtags

Melee kill one enemy player

Defeat the prison gang member in Champion Mode

Defeat 20 enemies with headshots

Find one treasure

Discover the Shrine in the Terme di Traiano.