The Summer Bonus Episode Add-on for HITMAN has 10 achievements worth 160 gamerscore.
Eliminate Abiatti by impalement, pen and fireworks explosion.
Complete all Opportunities in Landslide.
Complete Landslide.
Eliminate Mendola with the crystal ball, Kong in an electrocution, and both by poisoning the pipe.
Complete all Opportunities in A House Built on Sand.
Complete A House Built on Sand.
Complete Suit Only and Silent Assassin Challenges on The Icon, A House Built on Sand or Landslide.
Assassinate Bosco with the monster teeth, in a pyrotechnics explosion, and in a fire.
Complete all Opportunities in The Icon.
Complete The Icon.