There are 40 achievements with a total of 1000 points.

Arthur Haste-ings 0 You successfully took Phlash as Arthur	15
A Bit of The Old Ultraviolence 0 Killed 100 NPCs across all playthroughs	15
Our Prudent Friend 0 Listened to all the phone calls in the phoneboxes	15
Shocking Biology 0 Killed a guy named Ryan Andrews	15
That Kind Of Game 0 Retrieved the credentials from the club	15
The Slaughterer's Apprentice 0 Finished all of the butcher's apprentice quests	15
Mother of All Victories 0 Completed "Band of Brothers" encounter	15
The Great Lubricator 0 Delivered the cod liver oil	15
Not In Kansas Any More 0 Crossed into the Village for the first time	15
Archipelagist 0 Set foot on every island	15
The Importance of Not Being Seen 0 Finished Mystery House without being spotted once	15
Cat Burglar 0 In Thomasina House - Collected all fake cats	15
Gimme Shelter 0 Unlocked all of Arthur's shelters	30
I Got Better 0 Contracted and cured the plague	15
The Saint 0 Completed the entire game without directly murdering anyone	90
Baby You're a Rich Man 0 Gained £1000 from looting/bartering across playthroughs	15
Don't You Have Somewhere Else To Be? 0 Survived 50 days	90
Now I Can Die Happy 0 Died while overdosing on Joy	15
Remember, Remember 0 Found all collectibles	90
You Do Know Jack 0 Collected all Uncle Jack Shows	30
Snug as a Bug on a Drug 0 Took the Joy at the very beginning of the game	15
Employee of the month 0 Read all newspaper articles as Arthur, and redacted only the uncomfortable ones	15
Enjoy the View 0 Correctly sabotaged Clive Birtwhistle's redactor work	15
Downer 0 Completed Arthur's intro	15
The Arthur Hastings 0 Finished Arthur's playthrough	30
Hot on her Heels 0 Found all notes related to Prudence	30
Resistance is Futile 0 Talked to Johnny Bolton from the Secret Radio Room	100
Breaking Blackberry 0 Completed Sally intro	15
I Love the Smell of Chloroform in the Mornin 0 Knocked out 50 NPCs with the Atomizer	15
The Wyrd Sisters 0 Completed the Crones encounter	15
The Toxic Ex 0 Completed speaking with Verloc at the Joy Factory	15
The Sally Boyle 0 Finished Sally's playthrough	30
Gotta Catch Them All! 0 Caught 40 butterflies with Sally's butterfly net	15
Sugar Daddy 0 Injected yourself with glucose 10 times	15
Lighten Up 0 Used 25 lightning rods, playing as Ollie	15
Bon Voyage 0 Completed Ollie's intro	15
Miss Byng is Indisposed 0 Completed "No Place Like Home" encounter	15
Get the Float Out of Here 0 Completed "The Jack-o-Bean Club" encounter.	15
A Heavy Burden 0 Spread the Message	15
The Ollie Starkey 0 Finished Ollie's playthrough	30

Secret Achievements

Shouldn't These Be Red? 0 Destroyed 50 Explosive Barrels	15
Headmaster 0 Got 100 Headshots	15
Well-Read 0 Picked Up All Lore Items	30
Metal Guru 0 Killed 8 Robots in the Intro	15
Poor Viv 0 Completed Act 1	15
Local Hero 0 Saved all the Villagers	15
Queen Faraday 0 Completed Act 2	15
Deprogrammed 0 Completed Act 3	15
Helter Smelter 0 Pushed 7 Robots Into the Smelter	15
A Smashing Adventure 0 Completed the DLC	30

We Happy Few - Lightbearer

There are 10 achievements with a total of 180 points.

Golden Idol 0 Vibed All Nick Statues	15
Liner Notes 0 Picked Up All Lore Items	30
Mind Blower 0 Blew Minds of 15 People After a Charged Facemelt	15
Love Me Don't 0 Serenaded 30 people	15
Great vibrations 0 Parried 30 attacks with the Vibe	15
The Hits Just Keep On Coming 0 Hit 3 NPCs with the Same Gold Record	15
The Full Nicky 0 Pole Danced Naked	15

Secret Achievements

#1 on the Charts 0 Lifetime Achievement Award	30
One Day In The Life 0 Survived Day 1	15
B Side 0 Survived Day 2	15

We Happy Few - We All Fall Down

There are 10 achievements with a total of 180 points.

Bibliophile 0 Collected All Lore Notes	30
Self Actualized 0 Unlocked All Upgrades	15
Alley Catch 0 Found Loot in Alleyway	15
Canal Retentive 0 Found Loot in Canal	15
Push Over 0 Knocked Down 40 NPCs With Whip Shove Combo	15
Down the Tubes 0 Zapped 20 Different TVs with Dart Gun	15
All Natural 0 Finished DLC With No Upgrades	15

Secret Achievements

A Bright, Shiny Medal 0 Did Your Duty	30
Factory Finish 0 Restored Order at Haworth Labs	15
Tap Out 0 Shut Off Joy Supply to Waterworks	15