Here is the full list of all 53 Sinsations achievements.
Gluttony Path Complete
Gluttony true ending obtained
Gluttony bad ending obtained, specifically the one where Ganny / Gluttony die
Gluttony bad ending without Lucifer getting angry
All Gluttony Endings Seen
Read Gluttony's journal like the garbage you are.
Envy Path Complete
Envy bad ending, specifically Moooomentum, obtained
Envy's side hustle seen
Envy true ending obtained
Envy bad ending, suicide, seen
Complete Envy Path with at least two optional scenes, but still a good ending.
All Envy endings seen.
Sloth path complete
Sloth bad ending, specifically where Judas comes and gets you, seen.
All Sloth options answered correctly
Sloth neutral ending seen.
Sloth true ending obtained.
Pride path complete
Didn't skip Pride song interlude.
Ticket to Pride concert obtained by seducing random person.
Pride Bad Ending #2 obtained.
Pride true ending obtained.
Pride threesome seen, but good ending still obtained.
Pride bad ending #3 seen.
Bad ending #4 seen.
All Pride endings seen.
Lucifer ending with coin option completed, and the coin toss was called correct.
Kosuke was kind to the homeless and found a 20$ bill because of it.
Bad ending with Sondra killing Kosuke seen.
Refuse Sondra's help.
Bad ending with Judas as the stripper cop seen.
Wrath path complete.
Bad ending with twins seen.
Bad ending #2 seen.
Wrath true end obtained.
Good Ending With Wrath, specifically where Kosuke tells him about the other sins.
Play chess with Wrath.
See bad ending #4.
All Greed choices answered correctly.
Go to buy new clothes, but don't.
Send Greed a nude.
Win at the craps table.
Greed true ending seen.
Greed dying and hell bad ending obtained
Win the poker game against Greed.
Greed path complete.
Get thrown from Greed's penthouse by Alexander.
Read news articles waiting for Greed to get back.
Play blackjack waiting for Greed to get back.
Stay with your partner in Lucifer route.
Lucifer path complete.
Chester route complete.