How to pass level 21 of Defending Carrot 4: The Legend of Oz? Many levels have been updated today. Level 21 is one of them. We are discussing specifically how to pass this level. It is quite difficult. You need to make a reasonable combination. Lineup, let’s introduce how to clear level 21 of Defending Carrot 4: OZ.
1. First, place a poison needle tower in the first wave. There is a turtle tower in the right frame.
2. In the second wave, upgrade the Poison Needle Tower on the right. After the upgrade, attack the rabbit and obstacles on the right.
![Defending Carrot 4: The Adventures of Oz Level 21 Strategy Overview of the Graphics and Text Clearing Process for Level 21 of Oz [Multiple Pictures] Picture 2](http://img.sxsme.com.cn/uploadimg/image/20230330/20230330131831_59856.png)
3. There are three turtle towers on the lower right side of the road. Attack the rabbits below.
![Defending Carrot 4: The Adventures of Oz Level 21 Strategy Overview of the Graphics and Text Clearing Process for Level 21 of Oz [Multiple Pictures] Picture 3](http://img.sxsme.com.cn/uploadimg/image/20230330/20230330131839_46564.png)
4. This wave is about upgrading both sides. After upgrading, the obstacles can be quickly cleared.
![Defending Carrot 4: The Adventures of Oz Level 21 Strategy Overview of the Graphics and Text Clearing Process for Level 21 of Oz [Multiple Pictures] Picture 4](http://img.sxsme.com.cn/uploadimg/image/20230330/20230330131846_81211.png)
5. Pay attention to the placement. The poison needles on the outside are all upgraded to full level, and the tower cannon in the middle continues to attack.
![Defending Carrot 4: The Adventures of Oz Level 21 Strategy Overview of the Graphics and Text Clearing Process for Level 21 of Oz [Multiple Pictures] Picture 5](http://img.sxsme.com.cn/uploadimg/image/20230330/20230330131854_24556.png)
6. Both sides attack the rabbit at the same time. The obstacle is attacked from the left side and the two sides are separated.
![Defending Carrot 4: The Adventures of Oz Level 21 Strategy Overview of the Graphics and Text Clearing Process of Level 21 of Oz [Multiple Pictures] Picture 6](http://img.sxsme.com.cn/uploadimg/image/20230330/20230330131903_80177.png)
7. There are five turtle towers in the middle frame, which are also the tower cannons after reaching the full level.
![Defending Carrot 4: The Adventures of Oz Level 21 Strategy Overview of the Graphics and Text Clearing Process for Level 21 of Oz [Multiple Pictures] Picture 7](http://img.sxsme.com.cn/uploadimg/image/20230330/20230330131910_93585.png)
8. Continue to attack the rabbits to speed up the cleanup.
![Defending Carrot 4: The Adventures of Oz Level 21 Strategy Overview of the Graphics and Text Clearing Process for Level 21 of Oz [Multiple Pictures] Picture 8](http://img.sxsme.com.cn/uploadimg/image/20230330/20230330131917_29035.png)
9. In the last wave, three turtle towers are placed under the road on the left to attack obstacles on the road.
![Defending Carrot 4: The Adventures of Oz Level 21 Strategy Overview of the Graphics and Text Clearing Process for Level 21 of Oz [Multiple Pictures] Picture 9](http://img.sxsme.com.cn/uploadimg/image/20230330/20230330131925_71062.png)