You may wonder, what is the point of making the game harder for myself? For experienced players who never die in the game and know how to get everything, the normal game can get boring. Some example of challenges could be playing in a world with lava oceans or not being allowed to use diamond tools. Challenges are certain rules or objectives you add voluntarily to the game to make it more difficult.
Adding a challenge to survival Minecraft is a perfect way to bring more fun and excitement into the game.