Steam Achievement Manager 5.1 (SAM 51) is now avalable and fixes all the Vista related crashes/bugs. You can now unlock the Huntsman, Dead Ringer, Cloak and Dagger again using this. Works with TF2, Left4Dead (L4D), and a bunch of other steam games like FLOCK!, Light of Altair, Plants vs. Zombies and pretty much any other Steam game.
- Install Microsoft .NET Framework 3.5 if you do not already have it installed.
- Download Steam Achievement Manager 5.1.
- Extract it to a directory that is convenient to you, but not your Steam directory. It’s a ZIP file, if you don’t know how to extract a ZIP file then you probably shouldn’t be trying to use this tool.
- Run Steam if it is not already running.
- Exit any active VAC protected games if any are running. While this tool does not directly interact with any game itself, it is better safe than sorry.
- Run SAM.Picker.exe and do whatever you want in it.