How to Get 'Payback's a Pitch' Achievement in Gears of War E-Day

There are 55 achievements for players to unlock as they play Gears of War: E-Day's campaign, multiplayer, and Horde Siege modes. Some of these can only be unlocked in a specific mode, but 'Payback's a Pitch' is one of a handful that can be unlocked in any game mode where the requirements are met. For this achievement, you need to 'take revenge on an Armored Wretch that stunned you.' If you're not sure how this works, then this guide will explain everything you need to know to get Gears of War: E-Day's'Payback's a Pitch' achievement.