Not a Scratch

Not a Scratch is an achievement in Halo: Spartan Strike. It is unlocked by keeping the 100% intact in Operation B, Mission 4. The achievement is worth 5 Gamerscore. It is represented by a circle with an aerial view of a Wraith inside it.

Tips
Although the level is most easily completed in the Wraith, it is by no means necessary to do so. By killing all of the level's enemies on foot, the player can ensure the Wraith remains undamaged.