Hello! I understand that Shadow Fight 2 opens up and you see the background, but the fight itself never starts. Let’s work step-by-step to get you battling again.

First, a couple of quick questions to help me better assist you:
- Are you playing the game through a browser since you mentioned WebKit, or is this the Windows app version?
- Have you noticed any error messages or does the game just remain stuck on the background screen?
- Have you tried restarting your PC or closing and reopening the game already?

Meanwhile, here are some general steps that usually help fix similar issues:

1. Restart the game and your device
Sometimes temporary glitches cause the game to freeze. Close Shadow Fight 2, reboot your Windows 10 PC, and reopen the game.

2. Clear the game cache and temporary files
Since you’re on Windows and possibly running the game in a browser with WebKit engine, clear your browser cache:
- Open your browser settings
- Find the option to clear browsing data/cache
- Clear cache and cookies for all time
- Then reload the game page.

If you run the game as a standalone Windows app, look for the game's cache files in your user folder and delete them.

3. Check for connectivity issues
Some parts of the game require a good internet connection to start fights. Make sure your network is stable and try switching between Wi-Fi and wired if possible.

4. Update the game
If you run the Windows app, check for updates to ensure you have the latest version as older versions may have bugs causing this issue.

5. Reinstall the game
If none of the above works, uninstall Shadow Fight 2 and reinstall a fresh copy. Your progress should remain safe if your game account is linked to a profile (Google Play or Facebook), so just make sure you log back in after reinstalling.

If your game is still stuck after these steps, please let me know the specifics, like any error messages or your method of playing, and I can guide you through more advanced solutions or account checks.

Are you satisfied with this initial guidance?