"Kill 25 enemies by ramming them with any vehicle"
After the mission Catch-A-Ride is complete, players will gain access to Outrunners. Using these vehicles to ram enemies will unlock the achievement once 25 have been killed. Damage incurred on the vehicle during such collisions can destroy the vehicle, so careful monitoring of the vehicle's structure may be necessary to avoid an unwanted character death.
- This achievement is a reference to the country song "Get A Little Mud on the Tires" by Brad Paisley.
- The Xbox 360 achievement gives "15" gamerscore.
- The PS3 trophy gives a "Bronze" trophy.