Mass Effect 3 Multiplayer - Solo Silver as Human Engineer

Tried a couple dry runs (no equipment buffs) that failed miserably, this was my first "real" attempt. Human Engineer level 20 Spec: Combat Drone 6/6 Incinerate 3/6 Overload 6/6 Alliance Training 5/6 Fitness 6/6 Weapon: Carnifex VII - Barrel V - Scope V Equipment: - Armor Piercing Ammo II - Pistol Amp II - Power Amp II