Deus Ex: Human Revolution - Yelena Fedorova Boss Battle (Highest Difficulty)

This is the second boss battle in Deus Ex: Human Revolution with Yelena Fedorova. Winning this battle grants “The Mantis” achievement. I am playing on the highest difficulty setting, “Give Me Deus Ex”, and I am, up to this point, speced for hacking and stealth.

After several failed attempts, I won the battle using several types of grenades to keep her stunned, followed by a couple of frag grenades and several rounds from the combat rifle and revolver for damage.

There is an alternate way to win this battle that involves coaxing Yelena to use her melee attack against several power generators scattered throughout the room. I was able to accomplish this, but it did not incapacitate her completely. In the end, the method I used here proved most practical.