Headshots, sewers, and melees
Keep playing sewers on easy and use black's ghost bullets for headshots and cole's blood ward for melee. Also since you keep on playing it's easy to play it on hard and get the achievement. P.S while in the tunnel keep using blood ward.
If you need more help, we've got more Clive Barkers Jericho cheats and also check out all of the answers for this game
Comments for this hint