Hi there! I understand you're experiencing a black screen issue when trying to play DEAD TRIGGER on your Android device running Android 10 with WebKit. Let's narrow down the problem and get you back to the game.

To start, could you tell me:
- Does the black screen appear immediately when launching the game or after some time?
- Do you still hear game sounds when the screen goes black?
- Have you tried restarting the app or your device already?
- Is your app fully updated to the latest version?

Meanwhile, here are some initial steps to try:

1. Restart your device: A simple restart can clear temporary glitches in memory.
2. Clear app cache/data:
- Go to Settings > Apps > DEAD TRIGGER
- Tap Storage and choose Clear Cache first, test the game.
- If it persists, try Clear Data (note this might reset game settings, so back up if possible).
3. Check for game updates: Ensure that DEAD TRIGGER is updated from the Play Store.
4. Reinstall the app: Uninstall and reinstall DEAD TRIGGER to fix corrupted files.
5. Disable unnecessary background apps: Sometimes other apps interfere with graphics rendering.

If these don't resolve the black screen, we can try adjusting your device's graphics settings or check for compatibility issues since you mentioned Android 10 and WebKit browsing environment. Also, verify if your graphics drivers/system updates are current.

Let me know how these steps go or if you already attempted any of them, so I can guide you further!