Relieve a Blaze of its rod.

Construct a Nether Portal.

Use a saddle to ride a pig, then have the pig get hurt from fall damage while riding it.

Craft and place a sign.

Throw diamonds at another player.

Upvote 1 player.

Harvest some leather.

Get 25 Golden Spatulas.

Complete Mrs Puff's Mission in Downtown Bikini Bottom.

Find 15 of Patrick's Socks

Complete Squidward's Mission in Jellyfish Fields.

Defeat Jellyfish King