Amazing Princess Sarah - Awesome Combo Achievement Guide

At the end of Dark Castle (Castle - 3) after throwing an enemy at the switch (Your First Enemy) you fall in front of 7 torches which will count for your combo (2,3,4,5,6,7,8) and and if needed a Bat will pass by the area (although don't rely on the bat as he may not be at the exact same spot he was for me)