Zombie Survival Challenge

The zombies are coming...
/reload is required to start the datapack.
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This datapack is a 20 minute challenge, where zombies will spawn around you and you have to survive.
The zombies in this datapack are faster, have more health, and hit harder.
Every zombie that spawns (even normal zombies) will not burn in daylight.
The game will get more difficult as time goes on.
To start the datapack, you must use /reload.
After 7 minutes, the zombies have a change to destroy a 5x5x4 area around them.
Making small bases and towers more difficult to survive in.
After 10 minutes zombies will start to spawn above you.
Making it necessary to build a roof over your base.
The challenge will end after 20 minutes.
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Tips for survival.
Get lots of food and tools, you will always be on the run.
Always build your bases very high in the sky.
Never try to fight, you will be overwhelmed.
Get stone tools, don't bother with iron.
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If you enjoy the datapack, please consider giving me a diamond

This datapack was made by me.

Please do not repost without my permission.