Anyone beat her? I could use some tips.

[Hint]: Shoot her one time and then quickly hide in one of the small rooms, do this over and over again.

After that stupid Sydney kept running ahead of me and dying, but I figured out were all the guys were eventually and killed them fast.

Then the game was over....weak, I want more!

Stand away from the room she's in, on the left wall of the room there's a visceroid. Shoot it with the pistol until it's dead. On the right wall there's two initiates. Shoot them too. Then, put C4 all over the floor. Watch the cutscene. After it's over, take a few steps back and head down. Time it for about when the Black hands will step on them, then detonate. Get out the rocket launcher and get to the bottom floor. Health and armor spawn there. Kill her from here, you may have to kill some black hands though too.

When you reach the top of the core (before the cutscene) stand off to the sides and pick off the mutants and visceroids in the cells with your pistol. Then head into the cutscene.

When you can move again, dash behind the red cage Sydney's in, and the BH's shouldn't shoot you once you're behind it. You'll take quite a bit of damage while getting there. From behind the cage, pick off the stealth guys by strafing around. If Petrova starts shooting, duck back behind the cage until she stops.

When the black hands are gone, step out from behind the cage and run around facing the ramp until she shows herself by shooting. Paste her with a laser rifle so she stops and flails around while burning, and charge her until you're up close. When you empty your current laser magazine, switch to the flamethrower and she should be easy work.