Once the cut-scene has ended familiarize yourself with updated objectives and collect a large club from the ground [#377]. Look around and ignore the fact that Riddick will fall asleep again, because everything is going according to the plan.
Obviously you must wait for Riddick to return to the world of the living. Use your newly acquired club to destroy a small robot which will appear in your vicinity [#378]. Once this is done locate a door with a green lamp. Start moving towards that door, but the second you hear noises climb on top of the nearest "pyramid".
Notice that new enemies, as well as robots have appeared in the area. Sadly you won't be allowed to destroy nearby sources of light, so you'll have to focus on avoiding hostile units. Wait for one of the mechs to turn around and run past it to get to a door [#379]. Thankfully once you're in a new passageway this level will come to an end.