Here is the full list of all 30 Ravva and the Phantom Library achievements.
Defeat the doppelganger Delilah!
Defeat Captain Clock!
Defeat the Eyeless King!
Defeat Melvy, the Whale Hunter!
Defeat the Jesters siblings, Sun and Moon!
Defeat the mighty Dragon Hunter, Dunda!
Defeat the ghost miner, Klondike!
Reveal the true form of the library's master!
Complete all the challenges of all books then defeat the final boss to reveal the true ending!
Defeat 25 enemies with the Red summon without leaving the game.
Defeat 25 enemies with the Blue summon without leaving the game.
Defeat 25 enemies with the Green summon without leaving the game.
Reveal 25 invisible items without leaving the game.
Defeat 25 enemies with any Fusion without leaving the game.
Complete all the challenges from The Forgotten Forest book.
Complete all the challenges from the Shipwreck Island book.
Complete all the challenges from The Eyeless King book.
Complete all the challenges from Melvy and the Whale book.
Complete all the challenges from Jester's Trick House book.
Complete all the challenges from The Dragon Hunter book.
Complete all the challenges from the Silver Fangs book.
Jump over a Moose ghost without being hit!
Stay underwater for over 30 seconds without being hit.
Travel through Magic Mirrors 10 times.
Dive into any acid pool while the Shield Power Up is active at the Melvy and the Whale book.
Cross the area with the pool of Wisp ghosts without ever touching the ground!
Freeze all the fire-breathing Dragon Heads at least once.
Destroy 15 ice stalactites before they touch the ground.
Find the artist and the loyal husky.
Find the programmer and the 3 black cats.