Full list of all 55 Watch_Dogs 2 achievements worth 1,260 gamerscore. It takes around 40-50 hours to unlock all of the achievements in the base game.
The base game contains 49 achievements worth 1,000 Gamerscore, and there are 3 DLC packs containing 6 achievements worth 260 Gamerscore.
All achievements
Achievements they've won
Achievements they've not won
Successfully complete an online Co-op Operation
Trigger the hack of the century
Finish Operation: Robot Wars
Finish Operation: Power to the Sheeple
Collect all the Key Data hidden in the world
Finish Operation: Shanghaied
Finish Operation: Hack teh World
Buy 25 cars in car dealerships
Finish Operation: W4tched
Finish Operation: Eye for An Eye
Finish Operation: $911
Finish Operation: Hacker War
Finish Operation: Limp Nudle
Complete 5 DedSec Events
Successfully neutralize 5 fugitives in Bounty Hunter
Neutralize 1 Hunter in Bounty Hunter mode
Escape a Level 5 felony
Finish Operation: Looking Glass
Get all the eKart upgrades
Finish Operation: False Profits
Do a stealth takedown on 30 enemies
Take a picture of someone vomiting
Do a sailboat race
Drive 4 km in the world while driving the Merengue from Elek Motors
Drive one of the Unique Vehicles
Buy a shirt in the Nudle vending machine
Buy the Gatorfeet Whine Country footwear
Use the "Call the cops" hack on the donut-disguised man in Haight-Ashbury
Take 25 ScoutX location pictures
Ride a cable car
Do a 140 meters long jump while driving a vehicle
Finish Operation: Haum Sweet Haum
Do a drone race
Hijack a boat
Buy all the apps in the App Shop
Hijack a bus
Hack a robot
Do a bike race
Finish Operation: Ubistolen
Finish Operation: Shadow
Pet 10 dogs
Buy a two handed weapon at the 3D printer
Finish Operation: Cyber Driver
Travel 200 meters on top of a car by hacking it
Get photobombed in a selfie
Make 3 jumps in a row aboard a vehicle
Successfully invade another hacker
Buy some pants after the party
Erase your past identity in the Blume servers
Finish Operation: Off the Hook
Finish Operation: Caustic Progress
Finish Operation: Automata
Finish Operation: Bad Medicine
Reach the maximum win streak bonus in Showd0wn
Finish Operation: Moscow Gambit