Stuntman: Ignition
50 Achievements
1,000
20-25h
Xbox 360
Xbox One
Xbox Series
Stealer
Steal 6 or more strings in 1 ranked Backlot Battle
20
How to unlock the Stealer achievement in Stuntman: Ignition - Definitive Guide
Set up a ranked Backlot Battle and have your boosting buddy join (online is dead so it's unlikely anyone else will join in). Have him drive in front of you and have him do a few stunts to build up a small string. Then you hit him from behind to steal his string. If you did it correctly, you should get a notification of the string theft. Repeat this six times in the same battle. You don't need to finish the battle so don't worry about crossing the finish line.
In a ranked Backlot Battle multiplayer game, steal 6 or more strings from your opponents. To steal an opponents string all you have to do is crash into them when they have any multiplier, do that 6 times in a single game to unlock this.
Best done with a friend or find someone in the forums.