Fast and easy way to get the 6-Piece Combo, after having completed the game.
How to Obtain 6-Piece Combo Achievement Fast and Easy
- Juggle an enemy with 6 Chicken Shots or Slides before it touches the ground.
Go to Badlands.
Head to the west of the fast travel statue.
Find the chickens and complete the achievement.
The chickens do not take damage, so you can try until you have completed the achievement.