Find all letters during a campaign
Complete mission "Le Boeuf"
Kill 10 enemies with the flare gun during a campaign
Continue playing to unlock this secret achievement.
Complete mission "The Third Man - Prison"
Complete a mission firing a gun only when killing silently
Secure precious collectible in "The Third Man - Prison"
Earn 10 skill points during a campaign
Complete mission "The Third Man - Ghetto"
Complete mission "The Third Man - Sewers"
Kill 150 enemies during a campaign
Trigger 5 grenades during a campaign
Secure 40 collectibles during a campaign
Complete mission "Leave A Light On - Storage"
Kill 100 enemies silently during a campaign
Secure precious collectible in "Leave A Light On - Storage"
Complete mission "Leave A Light On - Docks"
Complete mission "Death Of The Butcher - Crypt"
Kill 50 enemies silently during a campaign
Secure precious collectible in "Death Of The Butcher - Crypt"
Kill 50 enemies during a campaign
Complete mission "Death Of The Butcher - Cathedral"
Secure precious collectible in "Death Of The Butcher - Cathedral"
Secure 15 collectibles during a campaign
Complete mission "The Lost - Fuel Storage"
Complete mission "The Lost - Valley"
Complete a mission without getting identified
Earn first skill point
Complete mission "Fade To Grey - Hospital"
Complete campaign in Normal difficulty
Complete campaign in Agent difficulty
Secure precious collectible in "Le Boeuf"
Secure all collectibles during a campaign
Earn 15 skill points during a campaign
Complete the campaign in less than 5 hours
Kill 300 enemies during a campaign
Kill 200 enemies silently during a campaign
Complete a mission without using morphine although you have some
