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.
Lex is a thorn in the foot for Skye as she depends mostly on her stealth and when you track her it's more than easy to take her down with lex's insane damage normally it should only take up to two hits