Complex sentence: Meanwhile, in the panic room, Dr. Venture comforts a traumatized Dean and reassures him that they will live through this escapade as they had through many others; encouraged, Dean decides that they will find out what the Guild are after.
Split into simpler sentences: Meanwhile, in the panic room, Dr. Venture comforts a traumatized Dean and reassures him that they will live through this escapade as they had through many others. Encouraged, Dean decides that they will find out what the Guild are after.