Level Codes
At the overhead map hold down ALT-SHIFT-~ for a few seconds. A chest will appear that has all of the items you need to finish that chapter. You can also heal your characters there.
Chapter 1 6478
Chapter 2 9246
Chapter 3 7702
Chapter 4 2132
Chapter 5 5052
Chapter 6 0680
Chapter 7 0194
Chapter 8 4743
Chapter 9 9995