- "Complete the episode without using a single vehicle".
- "You completed The Signal without ever entering a vehicle".
You earn this achievement by completing The Signal without ever entering a car. There is only one time where vehicles are involved, where possessed monster trucks will attack you. It's quite difficult to get through this part of the level without getting in the car and may no doubt affect the Run-On Sentence achievement if doing both in the same playthrough, but it can be done. However, it is advised to do both achievements on a separate playthrough. To earn this achievement, it is best to move slowly through the area, only moving on once all of the Taken and monster trucks have been destroyed. Make use of flashbang and flares to kill the monster trucks more easily.