Tootchievement Unlocked: Around the World
Have your toot federate to instances in 10 different countries

Tootchievement Unlocked: The Old One-Two
Receive a favourite, followed by a pause of five seconds or more, and finally a boost.

Tootchievement Unlocked: Crowd Displeaser
Make a toot that causes at least ten people to reply with horrified admonishment.

Tootchievement Unlocked: So Much for the Tolerant Left
Block 10 hate speech instances.

Tootchievement Unlocked: Gone but not Forgotten
Delete and redraft a post after someone has already boosted it, and receive a boost from the same person on the new post.

Tootchievement Unlocked: You, but Stronger
Reply to someone's joke toot with a variation on their joke, and receive more boosts and favourites than them.