Dreams involving your old home often symbolize nostalgia, a desire for comfort, or unresolved issues from your past. The specific scenarios you described – evading danger with characters from "Avatar: The Last Airbender" and participating in a murder mystery challenge – suggest that you might be navigating through your own experiences or challenges in life.

The Fire Nation and the zombie bimbos/himbos could represent feelings of being overwhelmed or facing challenges that seem insurmountable. Hiding in a survival vault may indicate a need for safety or a desire to protect yourself from external pressures.

On the other hand, the Brooklyn 99 challenge in your old bedroom could signify a blend of humor and seriousness in your life. It may reflect your current social interactions or the need to solve problems within your personal relationships.

Consider what aspects of your old home resonate with you now. Are there unresolved feelings or memories that you need to address? Reflecting on these themes may provide you with insights into your current emotions or situations you are facing.