Clive Barkers Jericho

Difficulty must be on Hard and you must not get incapacitated (knocked out and transferred to another body) You're going to fight 2 bosses at the same time, Utu and Nanna and you'll get an achievement for each. Start with Jones and go left at the 1st fork. You'll see a small Vicus, covered in flies, hanging from the celing. You'll need to destroy 6 of these before tackling Nanna/Utu. OK so that's 1, left and straight on will be no.2, 3, 4 and 5. There was a right just before no.5, take it and then right again to find the last.

Nanna and Utu have holes where their hearts should be, shoot them there (Black's grenade launcher is best). As long as you didn't get incapacitated you'll get 2 achievements, one for each boss.

You're going to need to destroy the fly covered carcasses first, So do that before anything. Don't wait for your squad to appear, just go.

Start by going left right away, Hit the carcass close with Jones shotgun, and it should be destroyed right away. Keep moving along the path, Theres really no wrong turns, Just don't miss any fly's. If Nanna or Utu attacks, just move around them quickly.

When you have destroyed all of the fly hives, Nanna and Utu will attack you more directly both with flies, and with a strong punch if you are too close.

Switch to Cole, and activate her Time slowing ability, Walk infront of Nanna or Utu, and crouch infront of them and aim for the exposed heart. You have enough time to empty the whole mag, usually killing them instantly.

My video guide.