Turn wheat into bread.

Construct a better pickaxe.

Attack and destroy a monster.

Construct a furnace out of eight cobblestone blocks.

Harvest some leather.

Craft a workbench with four blocks of wooden planks.

Reached proficiency level 10 with any weapon type

Killed 15 enemies with the Hunter's action skill

Defeated the Rakk Hive, the Vault Boss, Sledge, Krom, or Flynt in a co-op game

Earned level 20

Applied an elemental artifact

Killed 25 enemies with explosive weapons