Return to Sender is an achievement in the Hearts of Stone expansion and is achieved by parrying arrows back at the archer until you've killed 3 of them doing this.
You'll need to max out the Arrow Deflection ability first to try for this achievement.
Tips[]
- Do not use any armor with arrow deflection enhancements (like runes, deflection, etc.) while trying to get this.
- You can whittle down an opponent's health first by more conventional means before parrying the killing arrow.
- Crossbow bolts shot by enemies, like Fallen Knights, also count as "arrows".