Here is the full list of all 42 Crayon Chronicles achievements.
fell 1000 times, yet persevered
fell 250 times, yet persevered
fell 100 times, yet persevered
fell 50 times, yet persevered
Played the game using the dev secret
Took 1,000,000 turns towards victory
fell 10 times, yet persevered
Played the game using the hardest of hardcore secrets
Played the game using the advanced loot secret
Took 100,000 turns towards victory
"Lose" 100,000 brain cells
Took 25,000 turns towards victory
Took 5000 turns towards victory
Took 1000 turns towards victory
Played the game using a ranged secret
Played the game using a painful secret
Played the game using a baking related secret
Finished cleaning up that library
Solved the Cemetery Groundskeeper's problems
Beat the game once
Beat the game 5 times
Beat the game 20 times
Beat the game 50 times
Beat the game 100 times
Returned as many overdue books as you could carry
Fully explored the graveyard's underbelly
Showed all the gangs in the Swampyard who's king of the hill
Finished every side quest
Beat the game using a baking related secret
Beat the game using the hardest of hardcore secrets
Beat the game using the dev secret
Beat the game using an advanced loot secret
Beat the game using a ranged secret
Beat the game using a painful secret
Defeated 25 baddies
Defeated 100 baddies
Defeated 250 baddies
Defeated 1000 baddies
Defeated 2500 baddies
Defeated 5000 baddies
Defeated 10,000 baddies
Beat the game in under 60 minutes