Part 1: Jumping
Tap on the left side of the screen to jump. A quick tap will let you cross short gaps, hop over low obstacles, and jump onto the heads of baddies.
Hold your left thumb down to perform a longer, higher jump. This will allow you to cover much longer distances and clear higher walls.
As soon as you release your left thumb while jumping, you start to drop quickly. This allows you to make more accurate jumps that are between a short jump and a long jump.
NEXT: Part 2: Bouncing