Custom Advancements is an easy to configure minecraft plugin where you can create your own advancements for your server. Your players can use the easy to use GUI to see the advancements and their progress and how to activate them!
add a plugin that checks if your x or z coords is above a certain number, I'd like to make achievements for going about 10k, and going to the world border
add a plugin that checks if your x or z coords is above a certain number, I'd like to make achievements for going about 10k, and going to the world border