Full list of all 48 Watch_Dogs achievements worth 1,250 gamerscore. It takes around 50-60 hours to unlock all of the achievements in the base game on Xbox One.
The base game contains 38 achievements worth 1,000 Gamerscore, and there is 1 DLC pack containing 10 achievements worth 250 Gamerscore.
Unlock every song with the SongSneak app
Unlock every Skill in the Skills Tree
Complete every Gang Hideout
Complete every Criminal Convoy
Complete 40 Fixer Contracts
Complete level 10 against all 3 Drinking Game opponents
Complete Act 5
Complete Act 4
Escape 15 police scans
Escape a level 5 police scan
Complete the final mission in the QR Code Investigation
Complete every Investigation
Complete every ctOS Breach
Check in at every Hotspot
Complete the final mission in the Human Traffic Investigation
Escape a level 5 police chase
Complete Act 3
Complete the final mission in the Weapons Trade Investigation
Complete every Privacy Invasion
Complete the final mission of the Missing Persons Investigation
Using non-lethal takedown, stop 10 civilians from calling to report you
Collect all 8 Burner Phones
Participate in 5 different City Games
Complete Act 2
Kill 4 enemies within a single instance of Focus
Kill 3 enemies with a single IED
Perform 10 vehicle take downs
Use the Crime Detection System to take down 20 confirmed criminals
Unlock every ctOS Tower
Complete Act 1
Tag 100 enemies
Invade and successfully observe 10 enemy Fixers in Online Tailing
Invade and successfully hack 10 enemy Fixers in Online Hacking
Complete an Online Tailing without being detected
Shoot out a tire on 15 different vehicles
Complete 10 Public Online Races
Get tailed 5 times
Take down Maurice
T-Bone: Complete Act 3
T-Bone: Complete 29 driving missions
T-Bone: Complete 20 Fixers contracts
T-Bone: Complete all side investigations
T-Bone: Complete Act 2
T-Bone: Kill 4 enemies at once by blowing up the RC Car
T-Bone: Complete 20 Militia contracts
T-Bone: Complete Act 1
T-Bone: Complete 20 Chicago South Club contracts
T-Bone: Complete 10 coop missions