The tutorial text in the first level didn't really help me that much, I had to figure out what to do through trial an error - in particular I wasn't aware I had a character that I could control with WASD. Once I realised that, it took a couple minutes of messing around to figure out what it meant to recall and call imps.
Once I got into the swing of things I really enjoyed the puzzles. I liked that there were new mechanics added each level, really kept me engaged even though my small brain usually gets impatient with puzzle games. Very inventive central mechanic inspired by the theme is the highlight of the game.