Complete 'I'm Free - Free Falling'.

Reach rank (3) Officer as a Cop

Secure the train station

Recruit any of the Artisans and see them settled on the Homestead.

Complete each of the epilogue missions unlocked after the credits roll.

Unlock all Justice League characters (Single Player Only)

Collect all the red bricks (Single Player Only)

Attack and destroy a monster.

Construct a furnace out of eight cobblestone blocks.

Construct one type of each tool (one pickaxe, one spade, one axe and one hoe).

Use planks and sticks to make a pickaxe.

Open your inventory.