Full list of all 49 Watch Dogs: Legion achievements worth 1,195 gamerscore. It takes around 40-50 hours to unlock all of the achievements in the base game.
The base game contains 39 achievements worth 1,000 Gamerscore, and there are 2 DLC packs containing 10 achievements worth 195 Gamerscore.
Complete a Paste Up in every Paste Up location
Spend 100 000 ETO on Clothes in Campaign Mode
Complete "Finding Bagley"
Complete 20 Parcel Fox Delivery Missions
Complete "Royal Treatment"
Escape a Pursuit Level 5 doing a Statue Emote
Kill 5 Albion guards using Dive Bomb
Unlock all Upgrades in Campaign Mode
Purchase all Campaign Weapon Upgrades or all Online Weapon Upgrades
Complete a Darts game in every Darts location
Drink at least once in every Drink location
Have a team of 20 Operatives with different occupations
Enter Buckingham Palace's restricted area disguised as a Royal Guard
Complete "Parks and Reclamation"
Collect 15 Relics
Have your followers neutralize a total of 3 Albion guards
Turn all the boroughs into Defiant state
Recruit a Video Game Designer
Stun Clan Kelley members 5 times with paintball gun headshots
Complete the DedSec Storyline
Propagate a hack across 8 targets at once
Complete the Albion Storyline
Neutralize 10 Albion guards using Bee Swarms
Collect 50 Audio Logs
Perform 5 arrest takedowns
Defeat a DedSec Adversary
Buy a Vehicle Paint
Buy a Weapon Skin
Complete the SIRS Storyline
Complete a Revenge Mission
Complete Kick up challenge intermediate 1
Perform 5 stealth takedowns with a Professional Hitman
Complete the Kelley Storyline
Complete "Change of Heart"
Complete the 404 Storyline
Disable weapons of 5 Albion guards at once using the Spy Watch Gadget
Recruit an Operative in Campaign Mode after completing 'Reporting For Duty'
Turn one borough into Defiant state
Complete "Operation Westminster"
Complete all Campaign Missions on Resistance mode
This achievement is a secret. The more you play, the more likely you are to unlock it.
Unlock all Upgrades in the Bloodline expansion
Collect 50% of Data Drive files in the Bloodline expansion