The The Bad Seed Add-on for Dead Cells has 7 achievements.
You beat "Mama Tick"!
You beat "Mama Tick" without taking a single hit!
Finish the game without sacrificing the Mushroom Boi!
Appease "Mama Tick's" anger.
Reach the Arboretum for the first time.
Reach the Morass of the Banished for the first time.
Reach the Nest for the first time.