In order to get the achievement "Another Reality" it is necessary to see all hidden clips in the game. Some of them are in fixed positions and can easily be found using any other guide for this game.

However, 15 hidden clips are randomly distributed among a list of 48 clips. In order to find them, it is normally necessary to check each of these in order to find and play these clips. This can be quite challening, especially since one of them (# 283) starts completely black which means that the clip is only slightly darker at the hidden moment.

This guide explains step by step how you can extract the information about where each of these random hidden clips is in your game by reading it from the save itself.

In order to find out where the hidden 15 clips are in your playthrough, you first have to find the save file on your computer in which that information is stored. The save location is usually in this folder:

C:\Users\<username>\AppData\LocalLow\Half Mermaid Productions\Immortality\<unique_id>

The file is called "SaveGame.abr". In order to open this file, you will need any save file editor capable of handling unity save files. I used https://www.saveeditonline.com/ for this myself but others are possible.

After opening that file, you will see a lot of key-value pairs that contain all information about your current state of the game. The interesting entries are "Game > Assigned Secrets > 273 - 287". If you used the same website as I did, these are located on the very last page (10/10).

Each of these entries tells you which hidden clips with numbers between from 273 to 287 are are hidden in which regular clips. So if you see the line "Game > AssignedSecrets > 273 112" that means that you have to watch clip number 112 backwards in order to find hidden clip number 273.

A list of which clip number corresponds to which clip can be found in this reddit thread: https://www.reddit.com/r/ImmortalityGame/comments/x43wky/complete_list_of_clips_heavy_spoilers/

So by combining the information from the save data and the reddit list, we can find out that the line "Game > AssignedSecrets > 273 112" means that a hidden clip can be found in "Minsky 16 11/06/1970".

If you are unsure which clip you are missing, I would start by looking up which clip contains hidden clip number 283 since that is the one that's easiest to miss.

I hope this helps anyone struggling to finish this achievement.