This Game was a complete challenge. And I don't think I could've gotten past most of it without the help of some of these Walkthroughs. These are some walkthroughs that helped me complete the game, and really helped. Enjoy.
Chapter 1: "Courtesy Call"
Chapter 2: "The Cold Boot"
Chapter 3: "The Return"
Chapter 4: "The Surprise"
Chapter 5: "The Escape"
Chapter 6: "The Fall"
Chapter 7: "The Reunion"
Chapter 8: "The Itch"
Chapter 9 (Ending): "The Part Where he Kills You"
Ending Song
COMPLETE Co-Op Walkthrough
Chapter 1: "Courtesy Call"
Chapter 2: "The Cold Boot"
Chapter 3: "The Return"
Chapter 4: "The Surprise"
Chapter 5: "The Escape"
Chapter 6: "The Fall"
Chapter 7: "The Reunion"
Chapter 8: "The Itch"
Chapter 9 (Ending): "The Part Where he Kills You"
Ending Song
COMPLETE Co-Op Walkthrough