This save contains many interesting things, including:

Omega version of kefir
RGB room
Bunker key card (lying somewhere in the location)
Character Lambert (I call him Valera)
Hacked flashlight (was prepared for an expedition to the cave where the ATV is located)
Uncollected garbage at locations
Hacked money (using Cheat Engine)
Installation:

To install the save, simply copy the files to the folder C:/Users/USERNAME/AppData/Local/votv/saved/saveGames.

There are a few other interesting things about saving, but I'll leave them for you to explore on your own.

Author: Tapun777