Immediately following the area you left off in from Chapter 2.3 of Hunted: The Demon’s Forge, you’ll enter a cavern. From here, there will be an easy to spot ramp. Descend the ramp and take an immediate right turn at the bottom to find the fourteenth corpse containing a Death Stone.
Obviously, collect it. From this point, you can continue on down a path that will lead you to a door that you should enter. Within this door is a torture chamber that you will pass through. From here, there are a few weak enemies. Defeat them, and continue down the path util you come across another door. Enter this door to find yourself back in the main cavern.
From here, there will be yet another door that you should go through. Now, you make your way across the only visible bridge. There will be few few enemies that could become a pain in the neck for you, but you can get by with diligence. Now, enter the next door. From here, you can see the fifteenth corpse with a Death Stone. So, collect it.
Now shoot the visible explosives and make your way to save prisoner 11. Once rescued, continue down the ramps and make your way through the path. On your way, be sure to collect the sixteenth and seventeenth Death Stones from their corresponding corpses. From here, there will be a cave. Make your way to the bottom of this cave to reach a rest area, and the end of Chapter 2.4 of Hunted: The Demon’s Forge.