Guide to Import Saves from Demo
The folders for the main game and the (as of writing this, removed) demo are different, and the game will not give you a prompt to move your save file over automatically.
Move into your steam folder where your games are located and find the two folders labeled “Azure Striker Gunvolt 3” and “Azure Striker Gunvolt 3 Demo” and head into the latter.
Copy the file named “gv3game00” and move it into “Azure Striker Gunvolt 3”.
Once done relaunch GV3 and load up your save!
All achievements you would’ve gained from accomplishments such as getting S+ will automatically unlock.
P.S. If you’ve already started a save, you can name either of the existing “gv3game00” files into “gv3game01” to put it in the second slot. I presume 02 for slot 3, 03 for slot 04, and 04 for slot 05.