A few things:

1. Always check the basement with everyone but Graves' route. After the basement, you should be set on their route and basically all the other questions can be answered to your hearts content

2. Always Run when Graves tells you to, unless you are going for the achievement and image, you do not want to stay and help.
NOTE: Refer to Tip 4 for important information regarding this aswell

3. Only for the Secret Route do the interview questions matter, answer them however you like for everyone else

4. If you're doing Achievements, unlock Rusted before completing Graves' route!
There seem's to be an issue where, if you always pick Run Away and end up completing Graves' route before unlocking this achievement, the option to Run will not be there again until you have gone through another characters route. So make sure to save and Help Graves' first!
~Thanks to SgtFopper™ for this information~

5. I am aware that there is already a route guide out there, by mineraloid. However, I noticed people having some problems finding a few images, so I decided to make an image and route guide to hopefully make finding those images easier. I have no intent to copy mineraloid or mock all the hard work they put in to make their guide. I am doing this because I like writing walkthroughs and helping others~
mineraloids Walkthrough Link

Landry
⦁ Yeah, that sounds great!
⦁ You seem really fun to work with
⦁ I just thought it was a cool shirt...
⦁ Help Mason and Hayes in the kitchen
⦁ I guess I'll go, then...
⦁ Follow the Siamese Cat!
⦁ You're right...
⦁ Leave him alone.
⦁ What a hassle!
⦁ Sneak a Donut
⦁ One coffee, coming right up!
⦁ Have a good night!
⦁ Help Hayes with the dishes
⦁ [Either]
⦁ See what Landry's doing
⦁ Check the basement

Finley
⦁ Actually, I'm here about the job
⦁ But now you've got my interest!
⦁ Help Mason and Hayes in the kitchen
⦁ I guess I'll go, then...
⦁ [Either]
⦁ You're Right...
⦁ Leave him alone.
⦁ Mission: Accepted!
⦁ Sneak a Donut
⦁ You got it, hot stuff!
⦁ Have a good night!
⦁ Help Hayes with the dishes
⦁ [Either]
⦁ See what Finley is doing
⦁ Check the Basement

Hayes
⦁ Actually, I'm here about the job
⦁ I just rhought it was a cool shirt...
⦁ Help Mason and Hayes in the kitchen
⦁ I guess I'll go, then...
⦁ Follow the Siamese Cat!
⦁ You're right...
⦁ Do you hate people?
⦁ What a hassle
⦁ Sneak a donut
⦁ One coffee, coming right up!
⦁ Have a good night!
⦁ Invite him to go back to the others!
⦁ Just get some from work
⦁ Stay Put
⦁ Check the basement

Mason
⦁ Actually, I'm here about the job...
⦁ I just thought it was a cool shirt...
⦁ Help Mason and Hayes in the kitchen
⦁ You seem really busy; are you sure?
⦁ [Either]
⦁ You're right...
⦁ Leave him alone.
⦁ What a hassle!
⦁ I better not.
⦁ I like strawberry!
⦁ One coffe, coming right up!
⦁ Do you want me to walk you home?
⦁ Help Hayes with the dishes
⦁ Go to the corner store for coffee
⦁ Stay Put
⦁ Check the basement

Reese
⦁ Actually, I'm here about the job...
⦁ I just thought it was a cool shirt...
⦁ Ask Reese about the uniforms
⦁ I see what he's up to
⦁ Follow Reese's cat!
⦁ You're right...
⦁ Leave him alone.
⦁ What a hassle!
⦁ Sneak a donut
⦁ One coffee, coming right up!
⦁ Have a good night!
⦁ Help Hayes with the dishes
⦁ [Either]
⦁ See what Reese is doing
⦁ Check the basement

This route is only unlocked once you have completed every other character route. If this route does not unlock, you have to find out which character you haven't completed yet, as some have had a glitch that tells them they finished a players route yet they haven't.
The best way to tell if you've accidentally missed someone, is to look in the coffee cup on the menu. If one of the characters faces do not show up, you've missed them

You MUST hit each Important question if you do not you will be off this route and will have to start again.
I have only listed the important questions in this route, so any other question can be answered however you want to answer them!

Graves Secret Route
⦁ Actually, I'm here about the job...
⦁ important - Is that going to be on the test?
⦁ important - Pass the Interview. You do not need a 100% score but I have listed the questions I answered in my run of this route below.
Q1 - Cats that look like they're wearing tuxedos
Q2 - いいえ、話しません
Q3 - Orca
Q4 - Punk. I'm not dead, just resting.
Q5 - 7.5
Q6 - Draculas
⦁ Check out Graves Apartment
⦁ important - Yeah, I guess we haven't
⦁ important - What's really going on?
⦁ important - Run away

IMAGES:

Majority of the images will be found by going through the Route walkthrough's, so I have simply labled most of them with "follow {character name here's} Route" as I am lazy c:
If any of the descriptions are wrong or confusing, let me know and I'll change it :3

There are only 2 images I have yet to obtain, Image 56 and 78 as it is suspected they are glitched/bugged so are currently unobtainable. However if someone has found and obtained these two images, let me know! I'll add them to the list immediately


1 - Automatically obtained by going through any route
2 - Automatically obtained by going through any route
3 - Automatically obtained after getting image 2
4 - Automatically obtained after getting image 3
5 - Automatically obtained when you first go into the basement on Day 3
6 - Automatically obtained when you find the book on Day 3, after image 5
7 - See what Landry is doing
8 - Quit your job. This also unlocks the Quit Your Job Achievement
9 - Automatically obtained when you are confronted by the Mysterious Man
10 - Automatically obtained in the morning of Day 3
11 - Automatically at the beginning of every New Game
12 - Automatically obtained on Day 2
13 - Follow the Finley Route
14 - Follow the Finley Route
15 - Follow the Finley Route
16 - Follow the Finley Route
17 - Follow the Finley Route
18 - Follow the Finley Route
19 - Automatically obtained on Day 3
20 - Follow the Finley Route
21 - Follow the Grave Route
22 - Help Graves instead of Running. This also unlocks the Rusted Achievement
23 - Automatically obtained when you are returning home on Day 3
24 - Follow the Grave Route
25 - Follow the Grave Route
26 - Automatically obtained when Grave's saves you from Nacht
27 - Follow the Grave Route
28 - Automatically obtained when you are returning home on the First night
29 - Automatically obtained when you go upstairs with Graves
30 - Automatically obtained when you first meet Graves
31 - Follow the Grave Route
32 - Follow the Reese or Mason route
33 - Follow the Grave Route
34 - Automatically obtained when you come in on day 2
35 - Follow the Hayes Route
36 - Follow the Hayes Route
37 - Follow the Hayes Route
38 - Follow the Hayes Route
39 - Get coffee from Work instead of the Store
40 - Follow the Hayes Route
41 - Automatically Obtained after image 40
42 - Follow the Hayes Route
43 - Automatically obtained after image 42
44 - Automatically obtained after image 43
45 - Automatically obtained after image 44
46 - Automatically obtained at the end of your first day at work
47 - Follow the Hayes Route
48 - Automatically obtained on day 3, after getting image 59
49 - Automatically obtained on day 3
50 - Follow the Landry Route
51 - Follow the Landry Route
52 - Follow the Landry Route
53 - Follow the Landry Route
54 - Follow the Landry Route
55 - Follow the Landry Route
56 - [[Unknown maybe a bug]]
57 - Obtained after getting image 58
58 - Get Coffee from the Store instead of Work
59 - Automatically obtained on Day 3
60 - Follow the Mason Route
61 - Follow the Mason Route
62 - Follow the Mason Route
63 - Follow the Mason Route
64 - Follow the Mason Route
65 - Follow the Mason Route
66 - Follow the Grave Route
67 - Automatically obtained by following any route
68 - Automatically obtained after image 67
69 - Follow the Hayes Route
70 - Follow the Reese Route
71 - Follow the Reese Route
72 - Follow the Reese Route
73 - Follow the Reese Route
74 - Follow the Reese Route
75 - Follow the Reese Route
76 - Follow the Reese Route
77 - Follow the Reese Route
78 - [[Unknown maybe a bug]]
79 - Ask Reese about the Uniform, and Give In to wearing it. This also unlocks the Wore the Uniform Achievement

So this was added on last minute, because I wrote up all the route walkthroughs, and image locations, so I thought "why not add achievements to this guide as well to make it 100%!" So I have done just that ^^

I had a few troubles finding info on how to get some of the achievements when I was trying to 100% this game, so I hope this will help people out in the long run~
All the achievements are pretty straight forward, but if anything doesn't make sense, or I haven't explained it properly, please just let me know so I can change and edit it {this goes for any of the information above here as well}

Sweet Treats Are Made of This
Complete Mason Route


Following the route guide above will unlock this achievement
________________________________________________________________________________
Poetry in Meow-tion
Complete Hayes Route


Following the route guide above will unlock this achievement
________________________________________________________________________________
Memeweaver
Complete Finley Route


Following the route guide above will unlock this achievement
________________________________________________________________________________
Reap What You Sew
Complete Reese Route


Following the route guide above will unlock this achievement
________________________________________________________________________________
Tool Assisted Run
Complete Landry Route


Following the route guide above will unlock this achievement
________________________________________________________________________________
A Vampire Must Be Invited
Unlocked Graves


This achievement should unlock once you complete every characters routes
________________________________________________________________________________
Ravensworth Backwards Spells Dracula
Complete Graves Route


Following the route guide above will unlock this achievement
________________________________________________________________________________
Pumpkin Patch Kid
Wore The Uniform


Give in to Reese and wear the company uniform. This also unlocks image 79
________________________________________________________________________________
Take This Job And Meow meow meow meow meow meow
Quit Your Job


Quit your job whenever the opportunity to do so arises. This also unlocks image 8
________________________________________________________________________________
I mustn't rust away I mustn't rust away I mustn't rust away
Rusted


Help Graves and don't run away when he tells you to. This also unlocks image 22
________________________________________________________________________________
CAN Hug Every Cat
Complete All Routes


Following all the route walkthroughs above (including the secret route) will unlock this achievement
________________________________________________________________________________
Close That Gregslist Tab
Passed the Interview


Practically impossible to miss. Just go through the interview with Graves and this achievement should unlock. The answers you give should not matter