Here is the full list of all 77 Valdis Story: Abyssal City achievements.
Reach the 30th floor of the Heaven or Hell Arena
Beat the game as Reina.
Beat the game with 100% map completion.
Beat the game without using elixirs.
Learn all focus finishers in a single play through.
Perform a 100 hit combo.
Read All 5 Books of the Old Gods.
Perform a God Slayer ranked combo.
Defeat any boss without getting hit.
Perform a Stigandr ranked combo.
Retry 40 times.
Defeat any boss with less than 5% Hp remaining, and without using potions.
Perform a 50 hit combo.
Perform a 35 hit combo.
Perform a 20 hit combo.
Beat the game as Wyatt.
Beat the game with 100% civilians saved.
Beat the game with 100% crew found.
Hire Brizhal the mercenary.
Deal 1000+ damage in a single hit.
Deal 500+ damage in a single hit.
Deal 250+ damage in a single hit.
Spend 20 stat points in Intelligence.
Spend 20 stat points in Agility.
Spend 20 stat points in Luck.
Spend 20 stat points in Strength.
Summon the Raven to the Central Skyways.
Deal 125+ damage in a single hit.
Perform a 10 hit combo.
On Hard difficulty or higher, defeat Azudor in Tagrum with an [S] rank.
On Hard difficulty or higher, defeat Tagu with an [S] rank.
On Hard difficulty or higher, defeat Ruckjahl with an [S] rank.
On Hard difficulty or higher, defeat Shu Gohth with an [S] rank.
On Hard difficulty or higher, defeat Dhistahn with an [S] rank.
On Hard difficulty or higher, defeat Jahzracht with an [S] rank.
On Hard difficulty or higher, defeat Soul Rage Azudor with an [S] rank.
On Hard difficulty or higher, defeat Treu with an [S] rank.
On Hard difficulty or higher, defeat Gernot with an [S] rank.
On Hard difficulty or higher, defeat The Yeti with an [S] rank.
On Hard difficulty or higher, defeat The Raven with an [S] rank.
On Hard difficulty or higher, defeat The Eye of Myrgato with an [S] rank.
On Hard difficulty or higher, defeat The Eye of Alagath with an [S] rank.
On Hard difficulty or higher, defeat Anemone with an [S] rank.
On Hard difficulty or higher, defeat Magus with an [S] rank.
Beat the game as Wyatt on God Slayer difficulty.
Beat the game as Reina on God Slayer difficulty.
Beat the game with 100% items found.
Beat the game with an Adventurer Rank of [S].
Beat the game with a Combat Rank of [S].
Beat the game with an Adventurer and Combat Rank of [S].
On Hard difficulty or higher, beat the game with an Adventurer Rank of [S].
On Hard difficulty or higher, beat the game with a Combat Rank of [S].
On Hard difficulty or higher, beat the game with an Adventurer and Combat Rank of [S].
On Veteran difficulty or higher, beat the game with an Adventurer Rank of [S].
On Veteran difficulty or higher, beat the game with a Combat Rank of [S].
On Veteran difficulty or higher, beat the game with an Adventurer and Combat Rank of [S].
On God Slayer difficulty or higher, beat the game with an Adventurer Rank of [S].
On God Slayer difficulty or higher, beat the game with a Combat Rank of [S].
On God Slayer difficulty or higher, beat the game with an Adventurer and Combat Rank of [S].
Beat the game without saving on Hard difficulty or higher.
Beat the game without changing or upgrading your weapon, armor, or accessory.
Beat the game on Goibniu Mode.
On Hard difficulty or higher, beat the game in less than 3 hours.
Defeat any boss by using a Focus Finisher.
On Hard difficulty or higher, defeat The Feral Manawar with an [S] rank.
On Hard difficulty or higher, defeat True Anemone with an [S] rank.
Beat the game as Vladyn.
Beat the game as Vladyn on God Slayer difficulty.
Beat the game as Gilda.
Beat the game as Gilda on God Slayer difficulty.
On Hard difficulty or higher, defeat Lozzo with an [S] rank.
On Hard difficulty or higher, defeat Abbigail with an [S] rank.
On Hard difficulty or higher, defeat Ragano with an [S] rank.
On God Slayer difficulty or higher, defeat Leilodin with an [S] rank.
Unlock every weapon on all four characters.
On Hard difficulty or higher, defeat Possessed Dhistahn with an [S] rank.
On God Slayer difficulty or higher, defeat Abomination with an [S] rank.