Here is the full list of all 27 Adventure of Rikka - there are The Cursed Kingdom achievements.
You collected 20 Shards of Amulah!
You collected 50 Shards of Amulah!
You collected all 90 Shards of Amulah!
You collected 8 Orbs of Amulah! (Orbs created from shards doesn't count)
You collected all 19 Orbs of Amulah! (Orbs created from shards doesn't count)
You collected 25 golden coins!
You collected all 50 golden coins!
You found 10 of the runaway chickens!
You found all 20 runaway chickens!
You have become as healthy as you can possibly become!
You have become as strong as you can possibly become!
You have become as quick as you can possibly become!
The blacksmith has upgraded your Sword!
The blacksmith has upgraded your Grappling Hook!
The blacksmith has upgraded your Bombs!
You defeated the first boss!
You defeated the second boss!
You defeated the third boss!
You defeated the fourth boss!
You defeated the fifth boss!
You defeated the sixth boss!
You defeated the final boss! Well done!
You defeated the sand castle boss!
You won at the crane game!
You completed all of the minecart challenges!
You caught and handed in all fish with a gold star rating!
You activated all teleporters!