Here is the full list of all 38 Touhou Artificial Dream in Arcadia achievements.
Obtain your first Sleeper
Take a selfie in the Underworld's nuclear reactor
Participate in a fateful encounter
Fill 25% of the Sleeper database and report to Nitori
Fill 50% of the Sleeper database and report to Nitori
Fill 75% of the Sleeper database and report to Nitori
Complete the Sleeper database and report to Nitori
Have at least 100000円 on hand at once
Win a game of cups
Fall in battle for the first time
Reach level 99
Defeat a Celestial
Take a selfie in the Scarlet Devil Mansion
Fuse a Sleeper for the first time
Get your first full discovery bonus
Take a selfie in Eientei
Spend over 10000円 on a single purchase
Purchase every available upgrade at the terminal
Take a selfie at the top of Youkai Mountain
Take a selfie on the Moon
Take a selfie in the Primate Spirit Garden
Take a selfie in the Garden of the Sun
Take a selfie in the Shining Needle Castle
Take a selfie in the ruins of TORIFUNE
See ending A
See ending B
See ending C
Obtain the Mask of Hope
Deliver the Moon Rabbit Uniform and the Moon Rabbit Rifle to Reisen
Find a way to pacify Parsee in the Underworld
Unlock every Youkai Grimoire effect
Obtain Layla's favorite Trumpet
Have a friendly duel with a puppet master
Rescue all of the poisoned cats in Muenzuka
Deal over 1000 damage with a single attack
Find a way to reset your stats
Fill all 4 of your party slots
Lose a party member to a reflected attack