Medal…?
The trick is, this isn't a hat or a medal. It's a commemorative sticker. Complete the Ready For Duty achievement in Team Fortress 2 to unlock.
Medal
Finished Season 2 in rank #2,992 with a score of 11. Medal awarded to those who participated in any season of Heroes of the Interstellar Armed Forces. Aliens Killed: 384 Team Kills: 0 Successful Missions: 8 Failed Missions: 3
Medal
Finished Season 5 in rank #952 with a score of 16. Medal awarded to those who participated in any season of Heroes of the Interstellar Armed Forces. Aliens Killed: 272 Team Kills: 0 Successful Missions: 3 Failed Missions: 2
Medal
Style: Participant
Finished Season 15 in rank #934 with a score of 11. Medal awarded to those who participated in any season of Heroes of the Interstellar Armed Forces. Aliens Killed: 79 Team Kills: 0 Successful Missions: 1 Failed Missions: 0
Medal
Style: Participant
Finished Season 28 in rank #768 with a score of 715. Medal awarded to those who participated in any season of Heroes of the Interstellar Armed Forces. Aliens Killed: 0 Team Kills: 0 Successful Missions: 1 Failed Missions: 0
Medal
Awarded to commanders who demonstrated Outstanding Execution in the Paranoia campaign.
Medal
Awarded to commanders who demonstrated Outstanding Execution in the Tears for Tarnor campaign.
Medal
Awarded to commanders who demonstrated Outstanding Execution in the Operation Cleansweep campaign.
Medal
Awarded to commanders who demonstrated Outstanding Execution in the Nam Humanum campaign.