It's highly probable that Androxus will Refersal and then Nether Step away from combat when in danger. After that, he's mostly a sitting duck, because you probably still have your movement abilities and he doesn't.

Use Defiance point-blank on slow moving or stationary targets followed by a headshot to deal more damage and not give your enemy the time to react.

Force Torvald to use his Recharge ability in order to maximize the effectiveness of your Energy Shield. Don't pull it out before he uses that ability. It will recharge his shield faster and your shield will be severely crippled.