The Puzzle Pack Add-on for Worms 2: Armageddon has 5 achievements worth 50 gamerscore.
Complete Puzzle 6 without taking damage
Complete Puzzle 11 without taking damage
Complete Puzzle 17 but have at least 1 item left in your inventory that isn't Skip Go or Surrender
Complete Puzzle 20 but have at least 1 item left in your inventory that isn't Skip Go or Surrender
Complete Puzzle 18 before Sudden Death kicks in