Hello there!

First of all, I have to say that I really love Resonance, and that I was a bit surprised that I couldn't find any guides specific to achievements anywhere.

This guide will basically help you get 100% of the achievements, but still trying not to spoil the game for you. Personally, I recommend you play the game twice--the first playthrough on your own, doing whatever you want, and the second for the achievements. But if you wanna play just once, it's ok, too, since I've taken some measures to try not to spoil the game for you:

• I've spoiler-tagged the description of all achievements.
  
• I didn't include the achievements icons, since some of them contain spoilers.
  
• I don't provide any hints for story-related achievements, since you'll have to solve them by yourself anyway (or check a full walkthrough).
  
• For missable/limited achievements where I could do it, I've included a step-by-step spoiler-tagged hint system, so you don't just get the solution.
  
• I've listed them in the order you obtain, or as close to that as possible.

IMPORTANT NOTE: Keep as many save files as you can without going insane (I think you only have 39 slots anyway). You might need to do some backtracking some times

If you find this guide helfpul, don't forget to upvote it later! 👍

These achievements aren't obtained in a specific act. They actually require you to do stuff throughout the whole game.

Independent
Finish the game without asking another character for a hint
Missable. Recommended for your second playthrough (especially if you wanna use in-game hints instead getting the answer from guides).
How to: When talking to other playable characters, NEVER pick any option like "What's next?", "What's the plan?", "Any ideas?", "What do you think?" and similar options that makes you ask for a hint.

High Score
SUPER ACHIEVEMENT: Finish the game with a full score
Missable. Limited (some achievements will force you to miss a few points). Recommended for your second playthrough (so you can explore the game and not worry about missing a single point, which will force you to check guides).
How to: There's a guide dedicated exclusively to this achievement. Here:
http://gtm.steamproxy.vip/sharedfiles/filedetails/?id=198469633

Listen to us
Play the entire game with commentary mode active
Missable. Recommended for your second playthrough (because the commentaries will reveal spoilers).
How to: As soon as you watch the intro and gets controls of Ed, open the menu and enable commentary mode. You may skip commentaries, and you don't have to click every single C/B button, but do not disable the commentary mode from the options while you're playing the game.

What I call Prologue is the short scenarios where playable characters are introduced to you.


no achievements


SAVE AT THE START!

Gotta hide
Escape a nightmare
Story-related.

Quick escape
INSANE ACHIEVEMENT: Escape from the monster without locking the door
Missable. Limited (it's probably impossible to get this and max points in this scenario).
How to: You need to do everything really fast, and it might take you a few tries. Click on the Chest on the left, and quickly enter the password. It's 591, so click up 5 times for 5, down once for 9 and up once for 1, then Open the chest. Hurry up and hide Under the bed, then watch Uncle Javi's LTM. Open your inventory, left-click the 365 pesos, then drag the single Peso to the Vent cover.
Note: If you're going for the High Score achievement as well, make sure you load to the beginning of the scenario so you can get all 8 points.


"That" guy
That creep on the subway? Yeah, that's you.
Missable.
How to: Before you give Anna the coin she dropped, talk to her and exhaust the dialogue options.

That went well
Talk to that nice girl on the subway
Story-related.


Mirror Master
Grow some eyes in the back of your head
Story-related.


Just because
Ray's kind of a jerk
Missable.
How to: When you're going through Emma's emails, more especifically when you're in the Drafts folder checking the email called 'Dear idiot', click Send.

Get the scoop
The pulitzer is in the bag
Story-related.

Act I is very linear. It starts as soon as you see the game logo and ends on a roof (minor spoilers).


Good listener
Listen to Saul's whole story without interrupting him
Missable.
How to: As Ed, when first talking to Saul, the janitor, always pick 'Let him talk.' until the achievement pops up.

Duo
Gain control of two characters
Story-related.

No smoking
Discover the chemisty department's secret
Missable.
How to: Must be done during your first visit to the Lab. As soon as you enter the lab through the window, click on the Sketch to the left of the Maintenance door to reveal a No Smoking sign.

Teamwork
Team up to fix the lab's water system
Story-related.

Wired
Rewire the lab door circuit
Missable.
How to: Right after you get the achievement Teamwork for fixing the lab's water system, and after using the fuse box instead of using the main entrance door, you have to fix the lab door circuit (the panel to the right of the fuse box). The steps to do so are as follows:

1. Click on Panel.
   
2. Click on Panel cover.
   
3. Use Screwdriver on one of the Screws.
   
4. Click on Power switch.
   
5. Click on Burned wire.
   
6. You can right-click the pins to get more hints as how this works.
   
7. Your objective is to connect the the Primary pin to the Terminal pin, sending the right amount of electricity.
   
8. You need a new wire to make that connection.
   
9. You don't have to go far for that wire.
   
10. Use the Loose wires that used to connect the circuit board to the keypad. It works by clicking it, then clicking on the Primary pin, and then you just move the cursor through the intermediary pins you want and finish by clicking on the Terminal pin.
    
11. Check the indicators to find out what's your energy input and desired output.
    
12. It's not that hard. Just check the green lights.
    
13. Basically you start with 19 units and have to end with 10 units.
    
14. Each intermediary Pin has a value that you can find out through testing.
    
15. Each of them basically "consumes" a fixed amount of electricity when the wire touches it.
    
16. Make different tests by connecting the wire, turning the power back on, and taking notes of your output, remembering that you start with 19 units. You can confirm if the wire is touching a given pin by checking if the light turned on (unless there's no energy left when the wire touches it). Don't forget to turn the power off before your next test.
    
17. Start by testing single intermediary pins, then test 2 at a time (when you know one of them), and so on. The next spoiler will provide the value of each intermediary pin.
    
18. The table below contains the value of each pin:
    
    Top Left (TL)

    -3

    Top Middle (TM)

    -5

    Top Right (TR)

    -4

    Middle Left (ML)

    -6

    Middle (M)

    -1

    Middle Right (MR)

    -8

    Bottom Left (BL)

    -2

    Bottom Middle (BM)

    -9

    Bottom Right (BR)

    -7
    
    
19. Bear in mind that you'll need to subtract only 9 units.
    
20. You'll need to go through 3 intermediary Pins.
    
21. Puzzle solution (check spoiler 18 above for reference): From the Primary pin, pass the wire on the left of ML, then over M, go back to the left of BL and finally connect it to the Terminal pin (and turn the power back on, of course).

Savior
Save Dr. Morales
Story-related.


Angel
Open Dr. Morales's journal without damaging it
Missable.
How to: What you have to do is input the right password (instead of choosing "Fine, let's just break it."), so let's skip to solving it:

1. Look for clues on the cover.
   
2. Check your LTM for more clues.
   
3. What did Javi call Anna again?
   
4. Hmm, I wonder what '1982' could mean...
   
5. Anna shouldn't forget that stuff, but you've just met her, so check for clues elsewhere.
   
6. Check Anna's inventory.
   
7. Examine her ID badge to get more information on her.
   
8. So she's called Anna Castellanos and she was born on April 22, 1982.
   
9. Solution: The angel on the cover is a reference to what Javi calls Anna. The number is the year she was born in, and the password is her birthday (April 22 > 4/22 > 422), so just input 422.

Dream master
Get all the memories from Anna's dream maze
Missable.
How to: You have to collect each of Anna's 3 memories in the dream. There is one per level. You go down by crawling over the vent opening on each level. If you accidentally fall down and get to the end before getting all memories, you'll be asked if you wanna wake up or keep dreaming (obviously choose to Continue dreaming if needed, but you shouldn't have to resort to this). Mazes are procedurally generated and they turn around to confuse you. After you watch Hansel and Gretel's LTM, you can click on your Pesos to mark the maze in any way you see fit. Make sure you watch them all just to be sure.


Cut the rope
Save yourself by destroying a rope
Missable (but hard to miss).
How to: Just don't click 'Skip' on the puzzle where you have to cut the rope.

KEEP A DIFFERENT SAVE FILE RECORDED RIGHT AFTER YOU START THIS ACT!

SAVE ON NEW SLOTS FROM TIME TO TIME, IN ORDER TO MAKE IT EASIER TO BACKTRACK!

Act II starts on a baseball field and ends with your jaws dropped ;)

This act provides the player with a lot of freedom, and you might end up screwing a few achievements. For this reason, I've divided achievements by location. Note that, with the exception of the last section, you might get the achievements in totally different orders.

KEEP AT LEAST ONE SEPARATE SAVE FILE FOR THE MOMENT RIGHT AFTER YOU GET THE FINANCIAL RECORDS!


Quartet
Gain control of all four characters
Story-related.

Decoder ring
SUPER ACHIEVEMENT: Decode a journal
Missable.
How to: This can be done anywhere and in a large window during this act, but just to be safe try to do it right after getting the group of 4 together.

1. You have to crack the code in Javi's journal as Anna.
   
2. You can do it without having to leave the baseball field.
   
3. Didn't Anna remember something right before she was being chased? (well, if you didn't find all of her memories in her dream maze, no, she hasn't)
   
4. Watch Anna's cypher LTM.
   
5. So that's part of the code, right? Do you see any logic? Any correlation to the symbols found on the journal?
   
6. For example, |_| would be a B.
   
7. Each letter corresponds to the lines around the position it occupies in the tic-tac-toe diagram.
   
8. You'll have to figure out the letters you're missing by analysing how the code works.
   
9. What's with those dots? Maybe they're a different part of the same cipher?
   
10. Maybe this blank diagram can shed some light:
    
    
    
    
    
    
    
    
    
11. This is called Pigpen cipher[en.wikipedia.org].
    
12. Resonance uses a variation on the pigpen cipher.
    
13. You should've noticed that a few symbols (the triangles) don't fit in.
    
14. Those letters are repeats from the basic pigpen.
    
15. You should be able to guess them by deduction.
    
16. Final solution:
    You don't need to read through the whole journal (but why not?), you only need to assign a letter to each symbol, and Q should be the last one. The achievement pops up after you close the journal.

See the Wizard
Find Morales's financial information
Story-related.

Hippocrates
Pay Ozzy while keeping your professional integrity intact
Missable.
How to:

1. What on earth is 'Hippocrates'?
   
2. He was Greek doctor, considered the 'Father of Western Medicine'.
   
3. Anna has to pay Ozzy without doing anything wrong as a doctor.
   
4. If you can't just give him Comfocil... what other options do you have (since you don't have the money)?
   
5. I'll rephrase: What other OPTIONS do you have?
   
6. When getting Comfocil from AutoPharm, before sending the request click Options and request placebos instead.

SAVE BEFORE TRYING TO USE YOUR NEW-FOUND TRICK TO SNATCH THE BLUEPRINTS FROM THE ARCHIVE!

Blueprint snatcher
Nab the blueprints from the police archive
Story-related.

Archive master
Get the blueprints on your first try
Missable. Recommended for your second playthrough (or try it only after solving it not worrying about mistakes on a separate file).
How to: It's pretty self-explanatory. If you can solve it on your nth try, you can load back to the moment just before your first attempt and get it on your first try.
Note: There's no problem in asking Officer Johnson for it, or trying to get it in any authorized way ;) (that won't work anyway)


Safe seer
INSANE ACHIEVEMENT: Open Tortoise's safe without using any "visual aids"
Missable. Limited (you'll miss a few points, making it impossible to achieve the high score). I recommend that you load a separate file from your first or second playthrough to get this, after solving the puzzle the normal way.
How to: You can do this as soon as you visit Tortoise. Usually, you should get a visual aid to solve this. Since it's just insane to do it blindly, I'll just give you the answer for each side of the safe. I'll just tell what position you should move the knob to, in a straight line. Consider each position to be numbers from 1 to 9, counting from top-left corner, like below:

Solution:

• Blue: 8-9-3-1-7
  
• Green: 6-9-8-2-1-2-8-9-3-2-5-4-7-9-6-5-2-3-9-7-4
  
• Yellow: 4-1-3-9-8-2-1-4-5-2-1-7-9-3-1-4
  
• Red: 8-9-3-6-4-7-8-2-1-4-5-8-7-4-6-9-8-5-4-1-2-8-9-3

Safecracker
Crack Tortoise's safe
Missable (it's not mandatory if you resort to blackmail, but still doable). Can be achieved either with or without visual aid. If you're stuck, just check the answer above, under "Safe Seer'.

Blackmailer
Gain Tortoise's help by resorting to blackmail
Missable. Recommended for your first playthrough.
How to: Must be done before solving the Tortoise safe puzzle. After asking Tortoise 'How can I crack the city archives?', present him (wait for it...) the Surveylance cam picture.


Note: This section always is done last.

Magnetic personality
Maneuver everyone through the super collider
Story-related.

Access granted
Gain access to the inner vault
Story-related.

I promise you
Your uncle holds the key
Story-related.

Close to heart
Learn Bennet's secret
Missable.
How to: Right after you make Anna decideif she wants to destroy or open the vault, you have to ask the right questions to Bennet in the right order as Ray. Below is the step-by-step:

1. Pick any line.
   
2. "What do you want with the Resonance research?" (If you chose that one before, yes, again!)
   
3. "Explain the note."
   
4. Last but not least, use Bennet's letter from Ray's LTM.

Personal note: I only understood the real secret after listening to this scene with commentary mode on, because the letter shows only briefly. In case you're curious, here's the full letter:
MORE SPOILERS:
The whole letter here:

Act II starts after you've collected your jaw from the floor and goes until the end of the game.


Finding north
Use a compass to find a new location
Story-related.

Technophile
Find a new location on the map using fancy technology
Story-related.

Key nabber
Remove the contents of a locker without opening it
Story-related.

Phone tracer
Track the movements of a killer
Story-related.


SAVE AFTER THE PREVIOUS ACHIEVEMENT! OR, EVEN BETTER, AFTER YOU GET THE LIVE RESONANCE AND LEAVE THE BUILDING.

The new world order
You stopped a killer, but let the big fish go free
Missable. Limited.
How to: It's the achievement for getting one of the two possible endings. Here's the step-by-step, out of multiple possible ways to get this ending:

1. You basically have to stop Ed.
   
2. Ray: "Then educate me on Antevorta."
   
3. Bennet: Step forward.
   
4. Bennet: "What happens now?"
   
5. Bennet: Step forward.
   
6. Bennet: "We?"
   
7. Ray: Step back.
   
8. Bennet: "More murder, Ed?"
   
9. Bennet: Step forward.
   
10. Bennet: "Can't you see the irony?
    
11. Ray: "You're delusional."

Lesser of two evils
You sided with an enemy to stop a greater foe
Missable. Limited.
How to: It's the achievement for getting one of the two possible endings. Here's the step-by-step, out of multiple possible ways to get this ending:

1. You basically have to stop The Eleven Foundation.
   
2. Ray: "Then educate me on Antevorta."
   
3. Ray: "You're a sociopath."
   
4. Ray: "How do we stop them?"
   
5. Ray: Show him the device in your pocket.
   
6. Ray: Use News report from LTM

So that's all, folks. I hope the black strips didn't annoy your eyes too much. The main idea was trying to help the most I could, but not giving it away if you still wanna try to solve the puzzles.

If you like this guide, don't forget to rate it up! 👍