I am not trapped in a facility full of robots. You
are all trapped in here with me
— The Soldier surrounded by robots
The Operation Gear Grinder Badge is a cosmetic item for all classes. It is earned by completing your first mission of the "Operation Gear Grinder" Tour of Duty in Mann Up mode. It tracks a player's progress through the various Mann vs. Machine missions. The badge's level increases based on the number of Tours completed.
October 9, 2012 Patch
- The model occasionally has problems rendering the translucent effects, causing only the center area to appear, while all the rest appears invisible.