We'll be going through the entire game and how you need to go through it in order to efficiently get all of the achievements while replaying the least number of parts. One thing to keep in mind as we go through this is that achievements will only pop up once you get to a loading screen to switch characters.
There are also some achievements such as "Nerd" and "Perfect Crime" which require multiple parts to be done in order to get the achievement in the end. I have the parts where these are covered labeled in the chapters on the right side of the guide.
This guide is split between 3 parts, if you're if you're looking for an achievement not featured in this part, view the other parts:
Interactive Drama
This achievement is for supporting Interactive Drama. Basically, this achievement you'll get just for starting the game, but as the first loading screen is after the chapter Father and Son you'll get the achievement once you get to the loading screen past that chapter.
Happy Birthday
Chapter - Prologue
For this achievement you'll need to complete the drawing, set the table, and play with the kids. Once you get up and get ready, you'll need to go downstairs to your drawing board and go through the quick time events until you complete the drawing. Then once your wife gets home, she'll ask you to help with groceries and set the table. You can then go outside to play with the kids, and you'll need to do the initial parts with each kid as long as you can until the game forces you to stop. Then you'll lift them up and win a sword fight with Jason.
Good Father
Chapter - Father and Son
For this achievement you'll need to follow the to do list on the board in the kitchen and send him to bed in a good mood. You don't have to be exact on the timings, but just make sure you stick somewhat close to it.
4:30 - Give Shaun a snack.
6:00 - Help Shaun do his homework.
7:00 - Make Shaun dinner.
8:00 - Tell Shaun to go to bed and make sure you bring his teddy bear up to him.
Private Eye
Chapter - Sleazy Place
For this achievement you'll need to get Lauren to talk about her son. In order to do this you'll need to choose the dialogue options Compassionate ► Convince ► Trick.
White Knight
Chapter - Sleazy Place
For this achievement you'll need to beat Troy. Once you leave Lauren's apartment a guy named Troy will come up. He's a douche so you'll go back in there and beat him up. As long as you get most of the QTE's correct you'll beat him and get the achievement.
FBI Investigator
Chapter - Crime Scene
For this achievement you'll need to find all of the clues related to the Origami Killer in the chapter. The list of all of these are below with screenshots.
Nerd
1/4
Finding all of these clues will also take care of the first part of the Nerd Achievement.
Inside the tent: The boy's face, the orchid on his chest, the origami figure in his hand, his hand the second time, and the cut on his leg.
The pollen trail near the tent.
The blood by the train tracks.
The footprints by the train tracks.
The blood on the fence.
The footprints up the hill.
The tire tracks up the hill.
Good Friends
Chapter - The Park
This achievement is for playing two games with Shaun and then buying him candy. For this one I played with the boomerang and the seesaw before buying the candy.
Got to Remember!
Chapter - Got To Remember!
For this achievement you'll need to correctly recall the facts about Shaun's disappearance. The choices are that the time was 4:15 ► his jacket was beige ► and his pants were green.
Negotiator
Chapter - Hassan's Shop
This achievement is for persuading the robber to leave. You'll need to walk up to make the robber see you and then go through the following conversation options.
Calm ► Name ► Reason ► Help ► Killer? ► Drop Weapon
Once you receive this achievement you'll need to reload the chapter and choose to save.
Perfect Crime
1/6
Chapter - Hassan's Shop
For the first part of Perfect Crime you'll need to let Hassan die. When the robber comes in just stand in the back and wait until he shoots Hassan and runs.
VIP
Chapter - Paparazzi
For this achievement you'll need to leave home without the paparazzi spotting you. To do this you'll need to go out the back door, over the fence, and through the alley to your car.
Agoraphobia
Chapter - Lexington Station
For this achievement you'll need to knock down at least 50 people. When time stops, and you have to chase Jason, be sure to go through the densest crowds you can so that you'll be able to reach 50 before the end of that scene.
Lucky Locker
Chapter - Lexington Station
For this achievement you'll need to find the correct locker on the first try. Once you get to the area with all of the lockers just go straight to row 18 locker number 3 and open it. Do not open any other ones as that will fail this achievement.
Blunder
Chapter - Nathaniel
For this achievement you'll need to shoot Nathaniel. When given the option during the confrontation, just shoot Nathaniel. It doesn't matter if you continue the game with this choice or the choice to not shoot him. So after you do the first one, reload and choose to save so you can do the other.
Self Control
Chapter - Nathaniel
For this achievement you'll need to NOT shoot Nathaniel. When given the option during the confrontation, just don't press the button to shoot him. It doesn't matter if you continue the game with this choice or the choice to not shoot him. So after you do the first one, reload and choose to save so you can do the other.
Baby Master
Chapter - Suicide Baby
For this achievement you'll need to make no mistakes when taking care of the baby. For this you'll need to successfully get through the diaper change, warming up her bottle, feeding her, and finally putting her to sleep without messing up any quick time events.
Good Driver
Chapter - The Bear
For this achievement you'll need to complete the bear trial successfully. Basically just get through the driving trial without completely failing and you'll get this achievement.
Trial Master
1/5
This will also take care of the first part the Trial Master achievement.
Kamikaze
Chapter - The Bear
For this achievement you'll need to take the best route on the highway. I show all of this in my video guide here.
Trial Master
1/5
This will also take care of the first part the Trial Master achievement.
Cat & Mouse
Chapter - Covered Market
For this achievement you'll need to beat Korda in the cold storage. This one is pretty self explanatory so just make sure you successfully get through all of the quick time events to win.
Tough Guy
Chapter - Kramer's Party
For this achievement you'll need to defeat Gordi's bodyguards. Same thing as the last one, just get through all of the quick time events successfully to win the fight.
Coward
Chapter - The Butterfly
For this achievement you'll need to give up on or fail the butterfly trial. Just go to the left of the electric maze and go through the coward door.
Electrified
Chapter - The Butterfly
For this achievement you'll need to complete the Butterfly Trial successfully. You'll need to start at the second to last gap on the right where there isn't as much electricity. Then you'll go straight up ► to the left ► up again ► and up one more time.
Trial Master
2/5
This will complete the second part of the Trial Master achievement.
Good Cop
Chapter - Shrink and Punches
For this achievement you'll need to stop Blake from hitting Dupre. Once given the option just choose to interrupt their fight. It does not matter if you stop it or let it happen ending wise, so choose one route, get the achievement, and reload to get the other one.
Bad Cop
Chapter - Shrink and Punches
For this achievement you'll need to allow Blake to keep hitting Dupre. Basically just stand there and do nothing while he beats up Dupre. It does not matter if you stop it or let it happen ending wise, so choose one route, get the achievement, and reload to get the other one.
