Death Rule: Killing System achievements:

=One-Time Based=
A Heart-Stirring Murder Game—Start the Episode [Killing System]
This Cruel World's Unchanging Pessimism—Start the Episode [Never Dead]
Arianne's Inferno—Start the Episode [No More Games]
Not-So-Functional Systems—Read the Help Tutorial

=Character Based=
A Bloody Gothic Delusion—Finish Raimie's Character Events
Asgard—Finish Kai's Character Events
Shin Shujinko Tensei—Finish Ichirou's Character Events
Good Cop, Fair Cop—Finish Leslie's Character Events
Turbo Lady—Finish Jackie's Character Events
Sex, Violence, and Love—Finish Angie's Character Events
Cast Away—Finish Phillip's Character Events
Triple Spoiler—Finish Gregory's Character Events
Journey From the West—Finish Felix's Character Events
Traumatized Center—Finish Erwin's Character Events

=Ending Based=
Left For Dead—Had Devon be tainted in more ways than one. (Sean Bad End)
Brotherhood—Had Sean realize his true value to Devon. (Sean Neutral End)
Until Our New Dawn—Had Devon and Sean come to terms with their feelings. (Sean Good End)
The Other Side of Despair—Had Devon give up on humanity. (Yuuki Bad End)
A Cornerstone of Memories—Had Yuuki realize her true value to Devon. (Yuuki God End)
Ai ni Subete Wo—Had Yuuki give Devon that final push. (Yuuki Good End)
Fraternite—Lead both your friends out of Hell. (Yuuki/Sean True End)
Together in Death—Had SAYA put Phillip out of his misery. (Phil Bad End)
In Memoriam—Had Phillip face reality. (Phil Good End)
End of Watch—Had Leslie fall in the line of duty. (Leslie Bad End)
Dutybound—Had Leslie continue her father's legacy. (Leslie Good End)
Tomorrow Always Comes—You remember the names of the deceased? (Leslie/Phillip True End)
[Insert Never Dead Endings Here]
Paradise or Hell—Sacrificed everyone, including those you love, to get your way. (NMG Worst End)
Like Mother, Like Daughter—Sacrifice everyone to get your way. (NMG Bad End)
Peace Built on Blood—Sacrificed several people to save the world. (NMG Neutral End)
No Cost Too High—Gave your life to save the world. (NMG Good End 1)
Remember Me—Your beloved gave his life to save you. (NMG Good End 2)
Matricide—Brought the Queen's Syndicate to a bloody end. (NMG Good End 3)
No More Games—Saved everyone and spared the mastermind. (NMG Perfect/True End)
Welcome Home—The nightmares are truly over. (Epilogue Complete)
The Forest of Lament—How did we get here again? (Re:Lost Code Complete)

=Fun Achievements=
We Hardly Knew Ye—Found the poor dead bastard's name. (Ep:KS exclusive)
Rough Play—Had Sean teach Devon some new moves. (Ep:KS exclusive)
Pettankocon—Had Yuuki and Devon consummate their relationship. (Ep:KS exclusive)
Excuse You—Caught a certain couple getting comfy together. (Ep:KS exclusive)
Jigsaw Would Be Proud—You love seeing people suffer, huh? (Saw all executions)
Loyal to a Fault—Was that recap really necessary? (Finish Re:Lost Code when save data from Overdrive is detected)
More Euphoria—Is that what I think it is?! (Uncover a secret adult scene)
She Sees All—That overlay won't protect you. (Activate Steam overlay)
Real Time Murder—How long until a homicidal AI kidnaps us? (Play the game on May 21)
Shameless Shilling—Hear about what happened in Archbrook. (NMG Exclusive)
Pretty Pictures Painted in Blood—Saw the CGs you unlocked.
Audiophile—Checked out the music room.
Foreword and Afterword—Looked at the extra scenes you've unlocked.
The Words of God—Saw all staff comments.
Better than Reality TV—Saw the newest episode of Extra Stage.
Is There More?—Complete the game 100%