Here is the full list of all 46 Dangerous Fellows: Otome Game achievements.
Clear the Prologue
Clear the Episode 01
Clear the Episode 02
Clear the Episode 03
Clear the Episode 04
Clear the Episode 05
Clear the Episode 06
Clear the Episode 07
Clear the Episode 08
Clear the Episode 09
Clear the Episode 10
Clear the Episode 11
Clear the Episode 12
Clear the Episode 13
Clear the Episode 14
Clear the Episode 15
Clear the Episode 16
Clear the Episode 17
Clear the Episode 18
Clear the Episode 19
Clear the Episode 20
Clear the Episode 21
Clear the Episode 22
Clear the Episode 23
Clear the Episode 24
Clear the Episode 25
Clear the Critical Episode 01
Clear the Critical Episode 02
Clear the Critical Episode 03
Clear the Patrol Episdoe YS
Clear the Patrol Episdoe SW
Clear the Patrol Episdoe JK
Clear the Patrol Episdoe YH
Clear the Patrol Episdoe SM
Clear the Night Watch Episode YS
Clear the Night Watch Episode SW
Clear the Night Watch Episode JK
Clear the Night Watch Episode YH
Clear the Night Watch Episode SM
Clear the Normal Ending
Clear the YS Ending
Clear the SW Ending
Clear the JK Ending
Clear the YH Ending
Clear the SM Ending
Clear the True Ending