[*]NEVER GET BANNED AND VAC PROOF
This server will allow players to instantly receive specific, milestone
(for weapons), or ALL achievements simply by typing a special word in
the chat window. This process is done by a server mod - not a hack -
which means it is completely VAC proof.
WARNING: If you are on this server for 10 minutes, you will be server-banned for 10 minutes. This allows new people to join.
Server IP: 220.127.116.11:27015
Copy this full number and open TF2. Open your server browser ("Find
Servers") and click on "Add a Server". Paste this server IP into the
pop-up window and "Add this address to favorites".
[*]If you only want to unlock weapons and leave other achievements alone, type !milestones, then kill yourself.
[*]If you want all achievements(EVERYTHING WEPS AND ALL), type !givemeall, then kill yourself.
[*]Remember, you'll get banned if you stay in here for 10 minutes. Get in, do what you need to, and get out.
[*]Server Support Forum
[*]You can also use the Steam Achievement Manager, but it's slightly more risky.