Many thanks for the feedback.
May I ask: What actually was hard to understand?
You can only walk/jump and hit buttons within this game...the main thing you actually need to learn is to get past a door and how to open it in the first place (letting a minion of each color cross it) :D So what "mechanic" you mean?
I assume you did not play that many puzzle games so far? Usually puzzle paltformers are much less forgiving when it comes to not knowing or mastering a mechanic :D
Or did you skip the tutorial? I actually 'force' thr player to learn stuff here (will jump into spikes -> respawn, get stuck -> need to reset, closed door -> need to activate minions etc...Generally interested what you would like to see or do here to improve the tutorial part!