I had a survival horror dream last night. What does this mean?

It means you have a good imagination. Sometimes dreams are just stories. But a few of those things analysed are:

Zombie

To see or dream that you are a zombie, suggests that you are physically and/or emotionally detached from people and situations that are currently surrounding you. You are feeling out of touch. Alternatively, it may indicate that you are feeling dead inside and are simply going through the motions of daily living

Tunnel

To see a tunnel in your dream, represents the vagina, womb, and birth. Thus it may refer to a need for security and nurturance.

To dream that you are going through a tunnel, suggests that you are exploring aspects of