When you spawn in a timer will start, and after around 35 minutes the big boss will spawn in (he has a boss bar so you'll know) before that you need to find your way to the spoooky biome and collect as many candies from mob drops and candy blocks (found in the grass and underground) you'll also need to collect weapons to fight the boss at the end. When in the biome please mute Minecraft's music but leave on all the other sounds. This allows for the spooky music to be played. Other than that I hope you have fun collecting candies and fighting mobs and don't get too scared.