Walkthrough (Video) + Missable Achievements

Full video walkthrough with information on missable achievements.

Walkthrough

0:58 -Chapter 1-

3:38 Home
10:30 Publisher
17:25 Diner
22:30 Street
24:08 Portal

25:18 -Chapter 2-

39:00 Publisher
41:43 Diner
43:38 Street
45:33 Home
50:46 OUCA
52:04 Portal

53:10 -Chapter 3-

1:06:18 Miner's Pit
1:08:26 WUP
1:11:58 Robot Fix
1:14:17 Street
1:18:57 Diner
1:22:15 Home
1:27:16 Museum
1:31:44 Portal

1:33:10 -Chapter 4-

Missable Achievements

Happy February 12th! - Start new game on 12th of February

The exegesis - Finish Chapter 4 on March 2nd

Characters - Talk to all NPCs.
This achievement is currently broken, but you can still get it by editing game registry.
Launch 'regedit' and go to:
HKEY_CURRENT_USER\Software\Darjeeling\Californium
There should be following entries:
M1_CHARACTERS_checkSum_h1401771454
M1_CHARACTERS_h1443652428
M2_CHARACTERS_checkSum_h2781472317
M3_CHARACTERS_checkSum_h2206652092
M3_CHARACTERS_h3752664078
If you miss M1_CHARACTERS_h1443652428 or M3_CHARACTERS_h3752664078, replay those chapters and be sure to talk to all characters.
Chapter 2 however can not be completed for some reason so you have to adjust M2_CHARACTERS_checkSum_h2781472317 value manually. It should contain following null terminated data in no particular order:
-aa-ab-ac-ad-ae-af-ag-ah-ai-aj-ak-al-am-an-ao-ap-aq-ar-as-at-au-av-aw-ax-ay-az-ba
Add missing values and play Chapter 2 again.
I received mine when leaving home at the start of the chapter.
You might have to set it back to original value and then back again to full string a few times until it works. I think I got mine on 3rd try.
Also registry entry M2_CHARACTERS_h793040879 should now appear.
This was originally discovered by Mcbain, Formidolosus and LuckyDog
More information here:
http://steamcommunity.com/app/402060/discussions/0/350542145696849540/

[Cassis]

Thank you so much! The registry edit still works fine and necessary in 2023

[Ânon]

Any chance that the M2_CHARACTERS file can be shared? :0
Kinda hate to rerun the whole play ;-;

[grausehaffelschmittering]

Thanks for mentioning that one has to start a NEW game for the Happy February 12th! achievment!
I launched the game several times but the achievment didn't unlock.

[varialles]

Thank you! This worked like a charm!!