: Each class has three "Milestones" that unlock specific weapons. These are generally earned by completing a set number of class-specific tasks.
Arthur wasn't just a player; he was an achievement hunter. He had pushed payloads through hellfire, headshot airborne scouts, and taunted over the ragdolls of a thousand enemies. His profile proudly displayed a 94% completion rate how to unlock all tf2 achievements
Note: Bots do not count for player specific achievements (e.g., "Kill 10 scouts playing baseball"). For those, you need real friends. : Each class has three "Milestones" that unlock