Here is the full list of all 46 Afterimage achievements.
Perform a leap of faith.
May our paths cross soon once again...
Defeat Lush Wolf.
Achieve all achievements.
Defeat Loss, the Broken Wings.
Defeat Agus, the Pyro Goliath, Aqil, the Pyro Goliath.
Defeat Guider, the Shadow Moon.
Defeat Karin, the Occult Prime.
Defeat Eseus, the Transcendent.
Defeat Eseus, the Eternal.
Defeat all powerful existences.
Defeat all bosses.
Collect all shards of Divine Leaf and Divine Flower.
Collect all Primeval Glyphs.
Collect all Shenlong Glyphs.
Complete the Beastiary.
Collect all weapons and armors.
Collect all accessories.
Learn all secret arts.
Taste all cuisines of Engardin.
Reach level 99.
Obtain all abilities and Afterimages, and reach level 99.
Purchase all shop items.
Activate all Confluences of Stream.
Witness the long journey of Stanley and Levine.
Witness the effects of Nicole.
Witness the endless end of Ethan.
Witness the great adventure of Karsa and Brenda.
In the name of the Mask, Sword, and Halo.
Witness the last Echo of Rosalia.
Do not disturb other's "work".
Witness the fading of a sun.
Taste the flavour of happiness.
Where is my mind?
Down in a hall and I don't know if I can be saved.
Along the Tablet, seared by fate.
This fire is out of control...
...the hardest part of this is leaving you.
We're out on the road again.
Sweet dreams... are made of this?
Engadin is doomed\r and there's nothing I can do.
Shine on, you crazy flower.
Red phone or blue phone?
Save this for the sequel!
Deal 666 damage in one single hit.
Defeat an enemy by performing an enhanced Iron Bastion.