Hello there! It sounds like you're experiencing a black screen issue in DEAD TRIGGER after completing a certain chapter. Let's work together to resolve this.

Firstly, let's try some basic troubleshooting steps:

1. Restart the Game: Sometimes a quick restart can fix temporary glitches. Start by closing the game completely and then relaunching it.

2. Update the Game: Ensure that you are running the latest version of DEAD TRIGGER. Developers often release updates to fix known bugs and issues.

3. Clear Cache: Go to the settings of your device, then to Apps. Find DEAD TRIGGER and clear its cache. This can help resolve issues caused by corrupted temporary files.

4. Check for Graphic Settings: Sometimes, lowering the graphics settings within the game can solve display issues. Go to the game settings and try reducing the graphics options to see if it helps.

5. Reinstall the Game: If none of the above steps work, consider uninstalling and reinstalling the game. This will give you a fresh start and can sometimes fix persistent issues.

If these steps don't fix the black screen issue, you might want to check if there's any specific feedback or solutions available in gaming communities or forums related to your device or version of the game. You can also consider reaching out to the game's support team at [email protected] for further assistance.

Let me know if you need help with any of these steps or if there's anything else I can assist you with!