If you get a crash and don't mind putting in the legwork to report it, here's what to do (before relaunching the game!):

1 - Go find this folder where your data is stored:

Windows: AppData\LocalLow\Ice Water Games\Tenderfoot Tactics
(Note: You can navigate to AppData or a subdirectory by typing %APPDATA% into your file explorer nav bar)

macOS: ~/Library/Application Support/unity.Ice Water Games.Tenderfoot Tactics

Linux: /home/steam/.config/unity3d/Ice Water Games/Tenderfoot Tactics

2 - Send me these files!
- all PlayerData___.bytes files (e.g. PlayerData000.bytes)
- output_log.txt

My email is hey@badru.graphics

I can't guarantee I'll be able to fix the bug. It's always possible it's middleware or the engine crashing. But those files are the easiest and best way for me to hunt down whatever might have gone wrong.

(There's also a bug reporting channel on the Discord - check the other pinned threads in this forum for the link!)