I am not trapped in a facility full of robots. You
are all trapped in here with me
— The Soldier
The Operation Steel Trap Badge is a cosmetic item for all classes. It is earned by completing your first mission of the "Operation Steel Trap" 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.
August 15, 2012 Patch (Mann vs. Machine Update)
- [Undocumented] The Operation Steel Trap Badge was added to the game.