The Scream Fortress 2013 Title update for Team Fortress 2 has 8 achievements.
Kill 99 skeletons
Earn 4 of the Helltower achievements
Use spells to kill 25 players
Send Redmond/Blutarch to Hell 10 times
Get and use a rare spell
Get the loot from Skull Island in Hell
Win 142 rounds
Perform 17 environmental kills in Hell