The most common instance of your save data being lost and you bootup the game and it treats you like you're brand new with all your inventory wiped seems to be when your computer turns off while mid game- whether you do that purposefully or via a power outage. There might be other reasons why your save data might be lost- but luckily SFH creates multiple backups.

To find the saves, type in %localappdata% into your windows file search bar.



Then backtrack from Local to Appdata



Once you're in Appdata, go to LocalLow



Now go to the folder Sky9 Games



Now go to the folder Strike Force Heroes.



Now We're at the save folder.

Now all you need to do is select one of your Save game backups, right click one of them and copy it, then paste it.



Now all you need to do is Delete the file named SaveGame.sfh, and rename your copy SaveGame.sfh

This will replace your current save data (which is basically nothing since you start back at level 1 with no missions completed and no inventory) with one of your backups.

Backups are created I believe roughly every time you complete a mission. I lost my own save data sometime in Nov 2023, but because I only played 1 mission after my data loss(to see what would happen), I still had 8 backup saves available from Nov 2023 and so I was able to restore my save.

Now you can get back to the fight with all your gear, levels, and campaign completion! Woo!



Thank you to AniArtistMe https://steamcommunity.com/profiles/76561199265319840 for showing me where the saves were kept!