Text Walkthrough that will get you all 30 achievements. If there are any adjustments that would be beneficial to this guide feel free to comment.

You can make a save by pressing the "EXIT" key on your keyboard. You can also go into settings and make it skip text and turn the speed up. You press "TAB" to start skipping.

Make sure you keep your saves in order, save them in the slots I have them numbered as, so you don't get confused. If no choice is listed, pick the first choice or the only choice available.

Start new game.

Select the first dialog choice until the first choice says, “Look, that’s your choice.”
Achievements Unlocked: “Hard Seats”, “First Look”
Choice 2: I’m sorry, but I really have to go.
Select first choice until the first choice says, “He was a retired physics professor.”
Choice 3: He was a retired bus driver.
Choice 2: Rowing.
Achievements Unlocked: "Iron Memory"
Select first choice until the first choice says, “[SIT AT THE BACK]”

-SAVE #1-

Achievement Unlocked: "Second Look"
Select first choice until the first choice says, "[HAND OVER THE SOUL]".
Choice 3: You shouldn't do a job that's not yours.
Choice 3: If your colleague didn't do his job, that's his problem.
Choice 3: I'm not part of any deal.
Choice 1: So that's it? You're afraid of the consequences?
Choice 1: Not if you let this ticket thing go.
Achievement Unlocked: "Accumulator"
Select first choice until the first first choice says, “The rite didn’t give you any closure?”
Choice 2: I need to go now.
Select the first choice until the first choice says, “[PULL FACE]”.
Achievement Unlocked: "Indifferent"

-SAVE #2-

Choice 2: No… I can’t.
Choice 1: I left the bus. Just now.
Choice 1: I’ll try.
Achievement Unlocked: “Washroom Regular”

-SAVE #3-

Choice 2: No… I can’t.
Choice 1: Go to hell.
Choice 1: [LEAVE THE BUS]
Achievement Unlocked: “Nope”

-LOAD SAVE #2-

Choice 1: [PULL FACE]
Select first choice until the first choice says, “Enough! Let it be.”
Choice 3 : [PULL ONE LAST TIME]
Achievement Unlocked: “New Old Face”

-LOAD SAVE #3-

Choice 1: [PULL]
Choice 1: [PULL]
Choice 1: Enough! Let it be.
Choice 2: I tried.
Choice 2: [TRY AGAIN]
Choice 2: [WATCH THE MIRROR]
Achievement Unlocked: “Hearthole”

-LOAD SAVE #2-

Choice 1: [PULL FACE]
Choice 2: [PULL AGAIN]
Choice 3: [PULL ONE MORE TIME]
Choice 1: [WEEP FOR THE DRIVER]
Achievement Unlocked: "Extra Hours"

-SAVE #4-

Choice 2: (…like a baby looking for nourishment.)
Choice 2: A mother always… knows, right?
Choice 3: I didn’t ask you to defend me that day.
Choice 3: It’s best not to think too much about it.
Choice 2: [HOLD ONTO THE TICKET]
Achievement Unlocked: "Motherly Embrace"

-LOAD SAVE #4-

Choice 2: (…like a baby looking for nourishment.)
Choice 1: I never told my mom any of that.
Select CHOICE 1 for next 2 options.
Choice 2: [HOLD ONTO THE TICKET]
Achievement Unlocked: “Brotherly Bonds”

-LOAD SAVE #4-

Select first choice until the first choice says, "[CRY]".
Achievement Unlocked: "Dutiful Sister"

-SAVE #5-

Select choice 1 "[CRY]".
Achievement Unlocked: "You cried."

-LOAD SAVE #5-

Select choice 2 "[DON'T CRY]".
Achievement Unlocked: "You didn't cry."

-LOAD SAVE #1-

Choice 2: [SIT AT THE MIDDLE]
Select the first choice until the first choice says, “Yes. The bus station.”
Choice 2: I must have? What if I just roamed around at night?
Choice 1: I’d alter them if I could. I’d have walked around the whole night.
Choice 2: Something went wrong.
Achievement Unlocked: “Lost Traveler”

-LOAD SAVE #1-

Choice 2: [SIT AT THE MIDDLE]
Select the bottom/last choice until “Obsessive Thoughts” unlocks.
Achievement Unlocked: “Obsessive Thoughts”

-LOAD SAVE #1-

Choice 3: [SIT AT THE FRONT]
Select the first choice until the first choice says, “…How could it be you? How is this possible?”

-SAVE #6-

Choice 2: I won’t give any chances to an impossibility.
Choice 2: My mother died. Whatever you are, you’re not her.
Choice 2: Believe in you? Sometimes I don’t even believe in my own mother.
Choice 2: You know what? I’d rather believe in that than in her.
Select the first choice until the first choice says, “[SIT AT THE BACK]”

-SAVE #7-

Select the first choice until the first choice says, “[LEAVE THE BUS]”.

-SAVE #8-

Choice 1: [LEAVE THE BUS]
Achievements Unlocked: “Third Look”, “Dutiful Mourner”, and “Final Stop”

-LOAD SAVE #8-

Choice 2: I accept your proposition.
Achievement Unlocked: “Eternal Passenger”

-LOAD SAVE #7-

Choice 1: [SIT AT THE BACK]
Choice 1
Choice 1
Choice 1
Choice 4
Achievement Unlocked: “Dangerous Traveling”

-SAVE #9-

Choice 1
Achievement Unlocked: “Snitch”
Select choice 1 until end of game.
Achievement Unlocked: “Chance Meeting”

-LOAD SAVE #9-

Choice 2: [FOOL THE CONDUCTOR]
Select choice 1 until end of game.
Achievement Unlocked: “Traveling Companion”

-LOAD SAVE #7-

Choice 2: [SIT AT THE MIDDLE]
Select the first choice until the first choice is, “It’s best to give up.”
Choice 2: [PULL AGAIN]
Choice 3: [PULL ONE MORE TIME]
Select first choice until end of game.
Achievement Unlocked: “Who are you?”

-LOAD SAVE #6-

Choice 3: Come again? YOU are giving ME another chance?
Choice 2: You really believe we can just leave everything behind?
Choice 2: …I hope I won’t regret this.
Achievement Unlocked: “Mom’s Back”
Select the first choice until the first choice says, “[SIT AT THE BACK]”
Choice 2: [SIT AT THE MIDDLE]
Select the first choice until the first choice says, “It’s best to give up”
Choice 2: [PULL AGAIN]
Choice 3: [PULL ONE MORE TIME]
Select the first choice until the first choice says, “Yes… so am I. [APPROACH THE BED]
Choice 2: Maybe we don’t need to say goodbye now.
Achievement Unlocked: “Family Roadtrip”

-LOAD SAVE #1-

Choice 3: [SIT AT THE FRONT]
Select the first choice until the first choice says, “[check the purse]”
Choice 2
Choice 1
Choice 2
Choice 4
Choice 3
Choice 2
Choice 2
Choice 2: it’s not polite to comment.
Choice 3
Select the first choice until the first choice says, “Good evening.”
Select the second choice until end of game.
Achievement Unlocked: Eternal Listener

Credit for this text achievement guide goes to - https://www.trueachievements.com/gamer/afrek

https://www.trueachievements.com/forum/viewthread.aspx?tid=1474313

https://www.youtube.com/watch?v=RWLdwGQVynI