Leap of Faith is an achievement in Run 3.
Note: Only the Pastafarian can do this achievement.
Once you start the level you have to move to the left so you can walk on your bridge and not fall. If you go to the right you will fall because your bridge can not reach the next platform. Next you want to follow the path of platforms which is quite easy to follow. The path will end and you need to make a sharp and long turn to the left to another platform not that far away. Keep on walking left or forward and you will see there is no other platform left for you to go to. This is when you take a leap of faith and jump to the end of the level!