In map Xenodroidz Player vs Mob Arena for Minecraft PE you could have big challenge to battle with big boss on arena. Before battle you will be able to prepare, for example, take food, weapons, armors, bullets and so on. When you will done, teleport to arena and start fight with boss. Always be aware, because boss will attack you with shulker bullet. Avoid bullets and do not stop moving, because only it can follow you to success.
if you stuck with some problems you can watch this video, hope it helps you
some screenshots you can see below.
download Xenodroidz Player vs Mob Arena map for Minecraft PE 1.11 +