Here is the full list of all 30 Ravva and the Phantom Library achievements.
Travel through Magic Mirrors 10 times.
Reveal the true form of the library's master!
Defeat the ghost miner, Klondike!
Defeat the mighty Dragon Hunter, Dunda!
Jump over a Moose ghost without being hit!
Defeat 25 enemies with the Green summon without leaving the game.
Defeat the Jesters siblings, Sun and Moon!
Cross the area with the pool of Wisp ghosts without ever touching the ground!
Defeat 25 enemies with any Fusion without leaving the game.
Defeat Melvy, the Whale Hunter!
Dive into any acid pool while the Shield Power Up is active at the Melvy and the Whale book.
Defeat the Eyeless King!
Defeat Captain Clock!
Complete all the challenges from The Forgotten Forest book.
Defeat the doppelganger Delilah!
Reveal 25 invisible items without leaving the game.
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.
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.
Stay underwater for over 30 seconds without being hit.
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.