I saved some cred for 2 premium, got a batarian soldier and that harpoon sniper rifle
Batarian seems melee-oriented: ballistic knife deals more damage in close range; the blade armor reinforce your melee damage and deals damage to anyone trying to melee you(including brutes, geth hunter and prime, so I guess this would work on phantom and atlas too)
the harpoon gun is statistically better than my widow III. but like the arc pistol, the damage is pretty low if you don't charge it up first.
saw an asari justicar, the AoE barrier thing works like bubble shield, very useful when hacking/hitting 4 switches
anyone got one of those geths? wth is hunter mode?