This map requires Minecraft Snapshot 19w06a (1.14)
This map is totally different from traditional minecraft battle.
It depends on skill and reaction, you can dodge every attack from the boss with good reaction.
However, if you don't dodge those attack, you will die very soon.
The difficulty is neither about how many enemies are there nor how fast they move, but focusing on the spectrum of the boss's action.
Additional Info
How To Play
If you play multiplayer, you have to download and install the resource pack here.
If it is too difficult to you, you can run the following command which makes you invulnerable:
/effect give @s minecraft:resistance 1000000 4 true
Screenshots
