Taking up the dead rat corpses, Berryn leaves one by the main entrance of the tunnel, and proceeds back up the tunnel towards where the bears were. He suggests to the rest of the party to go back to the room where they found the pendant of Helia and wait there, he'll go with the candle and the last of the corpses to try and lure the bears down the tunnel, retreating back to the room with the rest of the party when the bears start moving, hopefully the bears will follow the trail of corpses, and proceed outside.
"If you here me screaming in agony assume the plan didn't work."