Tank Beats Everything Achievement in Halo: The Master Chief Collection

This achievement must be done on the Legendary difficulty.

After clearing the firefight against Covenant forces at the start of this mission, you will eventually encounter a UNSC Scorpion tank. For the purposes of this achievement, you must reach the bunker-like structure outside ONI: Sword Base with the tank still intact. This may sound difficult given it must be done on Legendary, but, so long as you keep a significant distance from the enemies and drive slowly throughout the mission, the damage the tank receives shouldn't be substantial enough to destroy it. If, for whatever reason, the Scorpion is destroyed (and you die as a result of being inside the vehicle), restarting or reverting to your last checkpoint will not void the achievement. Lastly, as a note of importance, both of the Covenant anti-air turrets can be destroyed with the Scorpion at a distance; you don't need to exit the tank and destroy them manually.