The Wang-Out: You look adopted.

[Raype]

Stockpile heavy ammo.

Use during boss fight.

Walk to next boss fight.

If the boss is still alive, use that burst fire assault rifle.

If you specced into infiltration, I hope you set yourself up for an OP build using the Widowmaker and happen to be rushing to it. Otherwise you just picked the most pointless class this side of the ME2 Adept.