There are 4 levels in chapter 1, 3 levels in chapter 2, and another 3 levels in chapter 3. So, just need to complete the first 10 levels with all candles lit.
Here is a video playlist. Please refer to part 1 to 10 for this achievement.
https://www.youtube.com/playlist?list=PL2QolhM4SgyiaRDbNHlTY...Part 1: Chapter 1, Level 1
Part 2: Chapter 1, Level 2
Part 3: Chapter 1, Level 3
Part 4: Chapter 1, Level 4
Part 5: Chapter 2, Level 1
Part 6: Chapter 2, Level 2
Part 7: Chapter 2, Level 3
Part 8: Chapter 3, Level 1
Part 9: Chapter 3, Level 2
Part 10: Chapter 3, Level 3