I used Godot RE Tools + a script to convert the .stex files to png. If i remember corectly this is how i did it. First download Godot RE Tools found here:
You must be registered to see the links
then with the tools select RE Tools/Recover Project then select and find your .exe file of Winter Warmth and create an output folder. I think another window pops up telling you if you want to extract the images of all files or something, i just selected only the images. If all goes well you should have a map of the extracted Winter Warmth files.
Now before continuing you should install Python 3, install it anywhere you like. After that you need this script:
You must be registered to see the links
(download as a zip) Now in you Winter Warmth folder you should have a folder with the name .import, thats where the renders are in .stex format with you need to convert those with this script. Simply place the contents in the script folder into the folder where the .stex files are located and run the script (should be a python icon now). Might be a bit difficult spotting the script file in between those 4000+ images
. After that you should have the renders converted to .png format. The animations for me, where already extracted and done but they are located in another folder, the assets folder sono work needed for those.
I might download the game tommorow and do this again to see if i explained it right so i might come back to you if it did't work out. Good luck.