Unlock any or all achievements for Steam games! This is VAC SAFE! You will not get banned.
1. Close Steam if it's already running.
2. Unpack it anywhere you want.
3. Start Steam.
4. Run C:/whatever/Achievements.exe
5. Hit the search icon, hit the tick, press the save key to the right.
This DOES NOT work with the Steam beta client.
For Team Fortress 2, if you only want to get the weapons and get the achievements yourself, check only the "Milestone" achievements. For example for Heavy you would check "Heavy Milestone 1", "Heavy Milestone 2", etc.