Here is the full list of all 13 Conjurors Eye achievements.
Scale your first object
Scale 10 times
Scale 100 times
Complete the game
Die from room shrinking
Scale toy box
Complete the game without deaths
Exceed 10 hours playtime
Beat best developer speedrun time
Grab all candles in one playthrough
Complete all three maze puzzles without failing
Stay in the starting room for one hour
Hold the scale spell for over a minute