This is a simple guide for getting the Through Thick and Thin achievement. Since I had some issues myself with picking the right choices to keep the Friendship Meters high enough between Zach, Isabella, Ash, and Becca, I thought I would share the route that ended up working for me. Only choices relevant to this achievement will be listed; if a choice is not listed, you should be free to pick whatever without messing anything up. This is a pretty spoiler-free guide, but it does include the choices needed to keep the four friends alive through their various chapters, so reader beware.

Note: This may not be the only path through the game to get this achievement.

Classroom w/ Becca

• I eat other things too!

Car w/ Ash

• Change the subject

Movie Theater

• Stay for the movie
• Meet with the professor

Café w/ Zach & Becca

• My instant noodle days are over!

Café w/ Ash

• I know you're trying to help

Park

• You're not bad after all

Belle's Apartment

• Go to work

Pick whatever choices you'd like.

Zach's Apartment w/ Isabella

• Tell the truth

Zach's Apartment w/ Isabella & Ashton

• I cooked up a feast!

Zach's Apartment

• Show the photo to Ash

Café

• She's married to one now
• It's really just a gig

Zach's Apartment w/ Isabella & Ashton

• We can still fix this

Mansion

• Keep looking for Ash

Pick whatever choices you'd like.

Movie Theater

• This cold caught up with me

Belle's Apartment - Phone Call

• Sorry for the trouble

Apartments Balcony w/ Belle

• Is this why you didn't go home last night?

School - Dinner Invite

• I have other things to do

Apartments Balcony w/ Ash

• Tomorrow afternoon, do you have time?

Apartments Balcony w/ Belle & Ash

• I-I might've seen her

Library

• Head for the door

Apartments Balcony

• Insist it's confidential

BRC Office

• Tell me about him

Isabella's Apartment

• Take her offer
• You're--You're okay
• Are you alright?

Bar/Pub

• I'd feel better if I don't have to worry about you
• Agree with Rebecca
• Offer a vague answer

Mansion

• Beg him to listen

Pick whatever choices you'd like.

The achievement should pop when the gallery image for it loads during the epilogue. It shows up after Ashton's various epilogue bits.

I hope this guide was helpful! It's my first one, so if anything is unclear or doesn't work for you, please let me know.