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Kill 20 enemies using the E-Combo

Activate the Supercharged Mode for the first time

Kill 10 enemies in a row using only Gauntlet after obtaining the Revolver

Defeat The Pain

Shoot a Kerotan for the first time

Use a knife to remove a bullet

Use bees to harass an enemy

CQC Slam a guard and knock him out

Achieve a camouflage index of +90%

Defeat Solidus Snake

Befriend Olga Gurlukovich

Defeat Vamp