1. Start the strategy : Starting from the lower left corner of the map, place two turtle turrets to ensure that they can effectively attack the props that appear.
2. Clean up monsters : The turtle's attack power will clear out some monsters, so be careful to collect the fallen boards.
3. Utilization of props : As monsters are cleared, wooden boards will appear. Use these planks to upgrade your turtle turret and improve overall clearing efficiency.
4. Continue to expand : Don’t stop, continue to place more turtle turrets in the right area to ensure no blind spots are covered.
5. Full-level equipment : When the props are basically cleared, give priority to upgrading the existing turtle turrets to full-level equipment, so that you can deal with the remaining enemies faster.
6. Ready**: At this point, your defense lineup is already strong enough. Just wait patiently and you can successfully pass the 13th level of Defending Carrot 4 Lucky God Battle.
By following the above steps, I believe players can easily unlock this challenge! If you still have questions, please feel free to check the detailed guide.