Here is the full list of all 16 Rosenkreuzstilette Freudenstachel achievements.
Complete the Prologue stage.
Defeat the 8 numbered members of Rosenkreuzstilette.
Defeat every member of Schwarzkreuz.
Finish the game as Freudia Neuwahl.
Finish the game as Pamela Arwig.
Add the upbeat Strudel to your arsenal.
Max out your supply of Cross Tanks.
Max out your reserve of Extra Lives.
Find Freudia's lucky charm.
Run out of time while facing Zorne Zeppelin.
Get kicked back to the Stage Select Screen by Schwer-Muta.
Complete a stage without taking any damage.
Defeat a boss with only one point of Vitality left.
Defeat the Darkside Devil without taking any damage.
Finish the game as Freudia in 60 minutes or less.
Finish the game as Pamela in 60 minutes or less.