(April 28th 2019) Started
(April 29th 2019) All achievements added / Voice achievement has been addressed. Not fixed.
(April 30th 2019) Corrections made / Completion minus 'Voice" achievement.
(May 1st 2019) 100% of achievements are now unlockable.
(May 4th 2019) Minor adjustments to guide
(May 5th 2019) Fixed foolish end game advice.
(May 6th 2019) Fixed more spelling errors.
(May 17th 2019) Fixed Irene to Irina / Gave correct method for obtaining vhs 8
(June 30th 2019) Added the 2 DLC achievements / Added to contributor list
(October 31st 2020) Added 11 DLC achievements / Added to contributor list
(November 3rd 2020) Completed Oct 29th 2020 achievements / Added to contributor list

Couple of terms I use often:

(Birthday) Party - Opening Rei Sintra's coffin in the mausoleum triggers this event. If you have unfinished business, do not enter the mausoleum.

End Game Sequence - This references the point of no return. After rebuilding the robot, she will ask if you are ready to deal with the witch. Saying yes will activate the point of no return.

1. Deal with the Devil:Signed the contract with Sintracorp.
A contract will be on the 10th floor desk. It must be signed in order to progress the storyline. Achievement Unlocked.

2. Photocopied Soul Saved your game with the photocopier.
It's a mandatory achievement to progress the storyline. You will be forced to save soon after meeting Mr. Hugo. Achievement Unlocked.

3. Welcome to SintracorpAccessed Sintranet.
Mandatory. Gain access to your ID card and use old computer near photocopy machine. Achievement Unlocked.

4. The Hammer of WitchesGot Hexenhammer.
Mandatory. Go to the library. Do the puzzles. Unlock the library proper. Take book from mummy. Achievement Unlocked.

5. Family PlotGot the photo of the Sintra family.
Mandatory. Use paper voodoo figure on employee you need to chase down. Coax employee to wall mouth. Achievement Unlocked.

6. Employee of the Month Cleared the poisonous air and talked to Dumont.
Mandatory. Beat the Dot Matrix boss, turn the red valve, make your way to the elevator and complete the cutscene. Achievement Unlocked.

7. The Key Got the key to the graveyard.
Mandatory. Enter R.Corvo's version of Sintranet via card. Get touched by the snake Sintra to reveal elevator code. Find hidden floor. Enter room. Get key. Achievement Unlocked.

8. She Found the Witch.
Mandatory. This achievement happens during Mr. Hugo's birthday party. After helping set-up the party. Achievement Unlocked.

9. Back to Work Went back to your office after the party.
Mandatory. Basically the description says it all. The boss battle and sequences before it can be tough though. Achievement Unlocked.

10. Head of the Company Rebuilt the robot.
Mandatory. Need get devil suit from canteen, go floor nine, use suit in front of museum door, figure out museum puzzle. Take head to floor 3 back room. Achievement Unlocked.

11. Break the Curse Woke up Domori.
Mandatory. You need the bells you unearthed from Rei's coffin. Climb on the back of the snake and up the ledge. Ring the bells. Achievement Unlocked.

12. Sweet Child o’ Mine Used Sintra’s swing.
Optional. After visiting the Sintranet a couple times you will find Sintra using a swing. Interact with it. Achievement Unlocked.

13. Motivational Meeting Passed Colonel Dumont’s test without making any mistakes.
During motivational meeting. Choose these options in this order (Some are similar so pay close attention):

• 1.I'm the lowest of the low!
  
• 2.I'm garbage!
  
• 3.The best!
  
• 4.The best of the best!
  
• 5.With my work!
  
• 6.With my blood!

Achievement Unlocked.

14. Junkman Gave Doshi what he was looking for.
Optional. Missed if at birthday party. I believe there are 2 parts you can give Mr. Doshi. They are called Robotic parts. Open the box within the Crow's Nest and/or the bookshelf below where the two people are socializing (you need to crawl between two dividers). Give part(s) to Mr. Doshi on the 3rd floor. Achievement Unlocked.

15. Crow’s Nest Found R.C.’s lair.
Optional. Missed if at birthday party. Use poison gas contract or close gas valve after Dot Matrix fight to reach this area. From the 4th floor elevator, keep going left past a corridor of file cabinets and bookcases. After entering a new area keep going left until you stand on the word 'hunter' scrawled on the floor Achievement Unlocked.

16. Ink Thirst Used an ink cartridge on the Dot Matrix.
Optional. Missed after Dot Matrix fight. Need ink cartridge. When Dot Matrix grabs you use an ink cartridge from your inventory. Achievement Unlocked.

17. Shortcut Placed three boxes in Office E.
Optional. Missed if you have >2 at birthday party. Place the boxes at the vent in office E on floor 5. Achievement Unlocked. You can find them here:

• Cardboard Box 1: Library. Near blood spider drawing.
  
• Cardboard Box 2: Can be purchased from Mappy on floor 5.
  
• Cardboard Box 3: Within the Dot Matrix Arena area. Middle, far right.
  
• Cardboard Box 4: After party floor 5 near altar.

18. Cat's out of the Bag Fed Sosa’s cats.
Optional. Missed if at the birthday party and don't have at least 2 cardboard boxes. You can unlock this achievement pretty early. When you ask Mr. Hugo about your ID card he will enter the boss's room. Search his desk for the cat food. If you miss that opportunity, you can search Mr. Hugo's desk any time he isn't there. After getting the cat food take it to the media rooms hallway. Usually the 3rd door will be blocked but if you have the cat food you can enter. There will be cats and food bowls. USE the cat food close to the bowls. Achievement Unlocked.

19. Promotion Passed the Initiation test on the second floor.
Optional. Missed if at birthday party. Floor 2. Talk to Mr. Chapman if given option say you will do promote test. When you see the boxheads cross diagonally, avoid them. If they cross horizontally sprint up next to them and press the action button. If successful you will see a heart above their head. Do this 5 times before timer runs out. Another approach to taking this test is to find boxheads that carry their briefcase in their left hand and interact with them. Achievement Unlocked.

20. Vapor Pool Talked to Sintra in Sintranet’s pool.
Optional. VERY EASY TO MISS. Best course of action would be to visit Sintra as much as possible after completing each task. Each time make sure you exhaust all dialog, email, information options.

• 1st visit: After obtaining ID card.
  
• 2nd visit: After completely filling out the library form.
  
• 3rd visit: After obtaining the Hexenhammer book.
  
• 4th visit: After the motivational meeting.
  
• 5th visit: After recovering photo of the Sintra family.
  
• 6th visit: After checking the cemetery gate for the first time.

At this point the area to the Sintra pool should be open. Do not delay getting back to the Sintranet or YOU WILL LOSE THE OPPORTUNITY. Enter. Achievement Unlocked.

21. Corrupt Found the secret area in the Sintranet library.
Optional. Directly related to Vapor Pool. After unlocking the pool go to the bottom right and take the cocktail. Use cocktail on blank canvas in Sintranet library and enter room. Achievement Unlocked.

22. Blessed Apparition Met A.M.
Optional. Light 3 altars before opening Rei Sintra's coffin. Achievement Unlocked.

• 1. Floor 1. Cafeteria, far left side. You will need the screwdriver to fix it and an offering of 5 credits.
  
• 2. Floor 2. Bottom left doorway (Residences) leads to a hall with boarded up doors. Give 5 credit offering to Altar between door IV and III.
  
• 3. Floor 5. Bottom left corner near restroom. Will cost you 5 credits.

23.Voice Listened to the “Voice” cassette.
Optional. Before birthday party. You can find the cassette in a box near the large hole that the player and Dot Matrix fall into, leading to the toxic pool. There is one cubicle button that needs to be reset at the very beginning of the maze. It is on the same wall but left of the six blood circles. Make sure the cubicles connected to that button are at their lowest position, otherwise you will not be able to regain access to the rest of the map. Achievement Unlocked.

24. Mr. Devil Used the Witch paper with the mirror.
Optional. Achievable up until end game sequence. This is one of the most interesting achievements in my eyes. If you have an extra soul photocopy paper use it on the floor 5 restroom mirror. Your soul now belongs to the Devil and you can't undo it. Achievement Unlocked SUCKER!

25. Athame Stole the dagger from Hugo’s hands.
Optional. Only available after birthday party and before end game sequence. This achievement can be tricky so be sure to save right before. You will need 2 batteries. Climb the stairs to the 10th floor. Make sure the knife is on the CEO desk but don't get too close. If it isn't on the desk put the batteries in the remote and quickly hide under a table. This will jumpstart Mr. Hugo into his moving sequence where he starts bouncing around his desk. When he starts 'quacking/ribbiting' quickly turn the TV on again. Hide under the long table on the right. Crawl to the top and wait for him to pass. Run to the knife, grab it and run under the left table keep moving down as fast as you can with the sprint button held. If you are lucky you should make it out before he has a chance to block your exit. If not.. good luck trying to predict his movements. Exit via the emergency exit. Achievement Unlocked.

26. Witch's Son Sacrificed all your senses.
Optional. During underwater end game sequence. Saving before entering water is advisable. You need to find 5 white snakes and let them bite you. An easy way to achieve this is by moving around the bottom right side of the cubicle, a snake should appear. After getting bit and losing 1 sense go into the elevator and out. This should reset the spawn point. continue doing that. Be sure to choose eyes as last sense to lose.. I mean unless you are a real sadist and love torturing yourself. Be warned, you can not save a certain 'friend' if you do this achievement. Achievement Unlocked.

27. Be Kind, Rewind Got the Videoclub Misterio VIP card.
Optional. Difficult achievement. You have to watch the first nine videos in the library media center. Be sure to save Ms. Sosa and pick up video 10 from the underwater section. At the very end talk to Ms. Sosa in the lobby. Achievement Unlocked.

This is where you can find each video:

• 1st: Chrysalis - Floor 7. In library archives (mine riddled room). In the far right lower corner, search the knocked over TV stand with VHS tapes spilling out.
  
• 2nd: From the Drain - Floor 5. Restroom, 2nd stall after man vacates the area. Search the toilet.
  
• 3rd: Follow a cat through the woods - Floor 8. In woods behind man left of elevator. Search the container.
  
• 4th: Blood Trail - Floor 4. Main Hub. Crawl under the divider right above the Ⓐ symbol. Search the 2nd locker.
  
• 5th: The Weary Human Face - Floor 4. Near Dot Matrix Boss. Crawl under dividers To find two file cabinets. Search the left file cabinet.
  
• 6th: Apparition (Appearance) - Floor 8. Behind tombstone, right of Sintra family mausoleum
  
• 7th: Fired - After Party. Floor 5. Search the briefcase near Office C.
  
• 8th: Office Party - After Party. Floor 9. Art exhibit. Look at all paintings except the Red Lady before completing the puzzle. A briefcase can be found where the Dot Matrix exhibit was after talking to Mr. Spader. Search the briefcase.
  
• 9th: Mr. Fileto - After Party. Floor 3. Back Office. Search the machines left of Rei Sintra robot.
  
• 10th: Mom & Dad - Underwater segment. Have a spare pencil available. Might need underwater certificate. Go to bottom right corner of underwater passage. Look and destroy a solitary mine near a briefcase. Search the briefcase.

28. Work Friends Saved all your friends from the Witch's hands.
Optional. Begins after birthday party.

*** Can not finish if you don't complete achievement 17) shortcut and / or you didn't unscrew the vent grate near the 'goblin' ***

. Use either Athame or plastic knife on the witch wrapped bodies. If you use the plastic knife you have to guess which friend you are saving. Cut and correctly guess all six free and beat the game. Achievement Unlocked.

You can find your co-workers here:

• Tony - Floor 2. Advancement Office. Don't worry about the boxheads, they can't hurt you.
  
• Irina - Floor 5. Office D. At the end of the hallway with the hanging bodies.
  
• Inay - Floor 5. Office E. Access the Sintranet using R. Corvo's metallic card.
  
• Jenna - Floor 8. Near river. Using floor 5's restroom vent and head down to the river. (*)
  
• Marta - Floor 7. Far left door. Use the vent in Office E from the 5th floor. (*)
  
• Kate - During underwater office sequence. Find notes hidden around office and punch the code into the elevator keypad. The elevator code: 🔔🔔🔔2468

29. Ending: I'm Better Off At Home Left the company without signing the contract.
When you first go up to the tenth floor after interacting with the contract choose no and get back in the elevator. Go to the lobby and exit the building. Achievement Unlocked.

30. Ending: Fired Left the company after Hugo fired you.
After the birthday party go to the tenth floor and confront Hugo. He will give you your termination papers. Go down to the lobby and exit the building. Achievement Unlocked.

31. Ending Back Home Left the company with Rei Sintra as the new CEO.
After beating the game and spawning back at the lobby emergency staircase, talk to all the co-workers you saved. Afterward exit the building. Achievement Unlocked.

32. Ending: Stay With Me Went to the rooftop with Kate.
You need to save Kate during the underwater office sequence. After you beat the game you will spawn in the lobby. Talk to Kate and after she leaves via the emergency staircase, do the same. Achievement Unlocked.

33. Ending: Cleaning Boy Found the truth of Hugo's identity.
After the birthday party. Either confront Mr. Hugo or do not enter the 10th floor. DO NOT TRY TO TAKE ATHAME (because bug?). After completing the game you will be treated to Mr. Hugo's origin story. Achievement Unlocked.

34. Ending: Super Hugo Discovered Hugo's final fate.
After the birthday party. Go up to the 10th floor and steal Athame (knife) from Mr. Hugo (for more info see achievement 25). After completing the game you are rewarded with a somewhat upsetting cinematic. Achievement Unlocked.

35. Virtual Ghost Find Rei's ghost in Corvo's Sintranet.
From the very bottom left of Corvo's Sintranet go up one square platform. Once you reach this square platform you will see corrupt bridge 3 steps (squares) left of the bridge you took to reach this platform. Walk to that corrupt bridge and take two more steps (squares) left; push down. You will walk onto a hidden platform, allowing you to traverse the entire outer map. The only thing I could find of importance was a statue, some palm trees and a circle of papers in the upper left hand corner. To activate the achievement, find a semi-transparent Sintra robot roaming around the outer map and talk to her. Enjoy the weird scene and try your best to escape. ;) Achievement Unlocked!

36. Unique Soul Don’t use any photocopiers during the game.
At this point, it is only an educated guess but my theory is that if you don't use the photocopier to save your game once during the game you will unlock this achievement. ;) Good luck! Achievement Unlocked???

37. Promotion Promote Mr. Chapman to the fourth floor.
Complete the promotion test on the 2nd floor and then go to the third floor. Afterwards you will see chapman leave the 3rd floor to go to the canteen where you need to speak to him. Afterwards go to the third floor and locate a HR lady and she will ask for evidence. Navigate the the security room to find an area with VHS tapes. Collect a blank VHS tape here and locate the camera in the room that shows Doshi speaking to an employee to acquire evidence. Afterwards return to the HR lady to give her the evidence and receive the achievement.Achievement Unlocked!

38. Big Brother Beat the video surveillance boss.
Use a screwdriver on little computers connected to employees in the security room on the 3rd floor to get security key cars from them. Once you have all 5 go the very north of the room to enter the boss room. Navigate the room carefully and unplug all wires, he will ask you 3 questions 1 by 1 after unplugging each area of wires. The first answer is "yes" the second is "4:3" (i forget the other digit but it will be obvious given the choice)" and the last one does not matter. Once you unplug them all he will speak to you and give you a new camera. Achievement Unlocked!

39. Oh, Kaifou Steal the Dagger from the secret office.
Complete Big Brother First. After acquiring the new camera, a new previously corrupted camera will now show Hugo hiding a key in a plant on the fifth floor. Go acquire the key and use it on the fifth floor Office F (You must have beaten the dot matrix boss to receive the pushable button
letting you explore the office fully). Navigate to the last room and interact with a painting to reveal a symbol behind it. Afterwards use the new camera you got earlier to repair the broken one in this room. Navigate back to the security room and locate the fifth camera to reveal Hugo entering Office F and hiding something behind the painting. Go back to Office F and acquire the Athame Dagger. Then you must hide from Hugo and escape the room without using any light source or he will spot you. Once you exit and end up on the lobby of the fifth floor. Achievement Unlocked!

40. Daddy Become Mr. Devil..
this one is mandatory achievement as long as you stole the dagger from the Oh, Kalfou achievement cause afterwards you get forced into a new route where there is no party, you instead end up navigating through the sintra home on the 2nd floor, collect all 4 photo pieces and then enter the bathroom after speaking, an animated custscene will occur. Achievement Unlocked!


41. Ending: Goodbye Say goodbye to Sintra.
enter the cave behind where Domori's body was burned after the fire maze area. When given the choice to kill the witch or spare her, you choose the "yes" option to kill her. Achievement Unlocked!


42. Control Watch all the scenes in the video surveillance area.
After the HR arc you receive a Sintra family photo. Instead of showing it to Sintra, go to the 2nd floor and complete Chapman's promotion to unlock the security room.
Before fighting the I.T. Boss, make sure to see the following scenes:
Floor 0, Chapman on the phone with his dad, Floor 1, Rostov talking about her food being stolen. Floor 3 scene 1 of Doshi speaking with an employee and scene 2 after using the blank VHS acquired near camera area 7 to see another scene of an employee trying to blackmail HR. Give this evidence to the HR lady in the security room to unlock a vent to camera area 4 to see a scene of Kate and Malone on the 4th floor. Floor 7 has a scene with Mappy and Sosa. Floor 6 will never have a scene and floors 5, 9, 10 don't have a scene yet but watch them just in case.
I forgot to mention but before the I.T. Boss there is also a scene on floor 8 of employees smoking. After beating the I.T. Boss watch the scene on the 2nd floor of a baby carriage and a bloody door and a scene on the 5th floor of Hugo hiding a key in a plant.
After this, hand in the family photo to Sintra and return to the camera room for a scene on the 10th floor where Super Toad Hugo can be heard laughing despite him not being seen.
Proceed normally to acquire the poison contract and return to the camera room to see a scene on the 1st floor of Rostov eating from the fridge. After this complete the Dot Matrix Arc and return to Office F on the 5th floor. From here navigate to the end of the room and reveal a symbol behind a poster, replace the camera on the left of it with the new camera acquired from the I.T. Boss. Return to the security room and watch a scene of Super Toad Hugo hiding the Athame Knife behind the poster on the 5th floor.
From here, do not steal the knife but instead use R. Corvo's key card in Office E, to receive an elevator code to a new floor. Acquire the cemetery key here and return to the security room to see the final scene of the devil on the 9th floor. Achievement Unlocked!


43. Forrest Kaysen Find the secret of the numbers.
Enter the R.C.'s lair and locate a cubicle where you can enter a bar room. Once there, just purchase 10 soda cans from the machine at 75 credits each. Achievement Unlocked!

44. Lost Tapes Watch three lost tapes..
Watch 2 of the lost tapes before entering the Sintra home (following the Oh, Kalfou achievement) and the last one is there. The first VHS tape is in on the 7th floor near the VHS tapes in the room wear you first encounter Mappy watching TV. The second one in a boat by the river on the 8th floor, near the forest goblin. The last one requires the player to interact with the tv in the dining room/room with the magnifying glass where you must turn the nobs of the tv in this order : right, right, left, right, left, left. The control achievement will take more time cause i really don't know how to fix the last camera. Achievement Unlocked!


45. Burn, Witch, Burn! Die by being burned at the stake.
Happens shortly after the Daddy achievement. The player will light a cigarette on a stove and sit on the chair to take photograph (it makes more sense to the people who are near this part in the game) then they will play as Domori where they must go immediately left to initiate a fire maze if they navigate it without dying. They need to to the south east and near a swing first, then straight north near a bookcase, then they need to head towards the right to find a toy ball and then a pool, after the pool scene they need to head far right to a coffin to end the fire maze. Achievement Unlocked!


Ending: The Boss of It All Become Sintracorp’s CEO..
Use the Athame knife near the mirror in the bedroom in the far north of the sintra home before entering the water in the cave. Afterwards a door will appear and you must progress back through the cave just like the Goodbye achievement. This time, instead of ending the game, hugo will give you Rei's head and you must use in the room you just revealed before. After reading through the logs on the computer, a card I.D. reader insert your own I.D. card. Achievement Unlocked!


Ending: The Secret of My Success Make Mr. Chapman CEO of Sintracorp.
Use the Athame knife near the mirror in the bedroom in the far north of the sintra home before entering the water in the cave. Afterwards a door will appear and you must progress back through the cave just like the Goodbye achievement. This time, instead of ending the game, hugo will give you Rei's head and you must use in the room you just revealed before. After reading through the logs on the computer, a card I.D. reader will let you insert Chapman's I.D. Card. Achievement Unlocked!

This section is dedicated to all those that helped me finish this guide. If not for the help I received it would have taken me several more hours of research to pinpoint what triggers some of these achievements. This is also a section for those that inspired me to create this guide.

People that helped me:

• idon091 - helped with Athame/Super Hugo/posting all the witch wrapped co-workers so i didn't have to go back/ (reserved) :)
  
• tiliacordata - helped confirm the location of a robotic part / corrected a mistake with Marta's witch wrapped body location / encouraging words / requesting better explanations
  
• Mr.B - helped with achievement Promotion (interact with the lefties)
  
• ballsinmyface69 - helped me stress the limited opportunity for achievement: 20. Vapor Pool
  
• selamatmencari - confirmed correct method of obtaining VHS cassette 8: Office Party
  
• JohnnyArcade - thank you for your help on finding the DLC achievement 35. Virtual Ghost
  
• Lacy / Phantron - mocking my guide title till I improved it :P
  
• Aelfric - giving me detailed explanations for all achievements from Oct 29th 2020 update. Thank you very much!
  
• LOSD, Coffee Addict, BoldTomato, Sorama, Royyst3r, Ivnie - for help with corrections and information on achievements from Oct 29th 2020 update.
  
• Kashimeow - Her Undying Love <3
  
• More to come.. ?

Thanks to Baroque Decay. I thoroughly enjoyed the game. If forced to choose, I would say The Count Lucanor tops this game because I felt it told a better story as a whole. Though I felt this game was worth its modest asking price. Anyway, keep up the great work and phenomenal pixel artistry.

I hope this guide was helpful and again if you find any errors, (God knows I'm not the best of spellers)
let me know and I'll correct them.