Full list of all 46 Hitman: Absolution achievements worth 1,000 gamerscore. It takes around 15-20 hours to unlock all of the achievements on Xbox 360.
Complete 100 challenges
Complete 50 challenges
47 precision headshots using a sniper rifle
Complete 10 challenges
Assassinate Diana Burnwood
Assassinate the King of Chinatown
Locate room 899
Enter the train in the train station
Assassinate Wade's men
Assassinate Wade
Approach the bartender
Acquire the Silverballers
Pacify Lenny the Limp
Leave Lenny in the desert
Exit the mines
Assassinate facility leaders
Defeat Sanchez with your bare hands
Eliminate the Saints
Gain access to the jail
Approach the church
Acquire suit & gloves
Assassinate Layla
Assassinate Blake Dexter
Assassinate Travis
Complete Hitman: Absolution™ on any professional difficulty
Collect all play styles
Achieve a lethal throw kill
Collect all evidence
Like a contract
Contain a situation gone bad
Earn 1 million contract dollars
Buy an upgrade
Complete the Create Contract Tutorial
Complete the Contract Basics Tutorial
Unlock a technique
Play a contract created by a friend
Create a contract competition
Participate in a contract competition
Escape attention from enemies
Achieve the rating: Silent Assassin
Remain undetected in a whole checkpoint
Achieve your first accident kill
Blend in successfully
Execute a point shooting with 3 kills
Hide a body
Subdue a person