Objectives are challenges found in missions that must be completed in order to progress through said mission. They can come in a variety of ways, whether it be freeing caged mobs, activating beacons, surviving an ambush, defeating a boss or finding a Key Golem and using it to open a door.
Some objectives require the player to free certain mobs from captivity. Freeing enough of these mobs will also allow you to access extra trading slots from the Village Merchant. They are immune to all forms of damage. These mobs include:
- Villager - Can be found in the Creeper Woods, Redstone Mines and rarely in the Frosted Fjord.
- Panda - Can be found in the Panda Plateau. Attackable pandas can also be found in this level too.
- Llama - Can be found in the cave area in the Windswept Peaks. Unlike other objective mobs, freeing them is not required to progress through the level, but will give the players access to a Fancy Chest if they do. Attackable Llamas can also be found in this level along with the other two Howling Peaks levels too.
- Turtle - Can be found in the Radiant Ravine. Attackable turtles can also be found in this level too.