Here is the full list of all 12 Comix Zone achievements worth 200 gamerscore. It takes around 2-3 hours to unlock all of the achievements on Xbox 360.
Rescue Alissa and complete the game.
Receive both endings.
Score 50,000 points.
Use a paper airplane.
Score 30,000 points.
Complete Episode 3.
Complete Episode 2.
Finish the first page.
Score 10,000 points.
Use the Iced Tea to restore your health.
Use the dynamite.
Rescue and pick up Roadkill.