hey! it’s just hard to keep track of which key does what, and i’d often end up pressing the wrong key by accident. pressing the wrong key in this game can be costly and ruin the level forcing you to restart, making for a frustrating experience.
this might not necessarily be an issue with the controls (i don’t know if a different control scheme would help), but maybe rather with an overload of functionality. keeping track of the complex switching/combining interactions might work better at a slow paced execution (puzzle type where you have time to think). this is why the timed levels were particularly annoying.