Catch and cook a fish!

Acquire 30 Emeralds by trading with villagers or mining.

Craft and place a Flower Pot.

Construct an Enchantment Table.

Kill a creeper with arrows.

Stop starvation using Rotten Flesh.

Acquire diamonds with your iron tools.

Construct a better pickaxe.

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

Craft and place a sign.

Swim in lava while having the Fire Resistance effect.

Attack and destroy a monster.