I can’t imagine playing it with the joycons tbh. It’s good on the pro controller but you can tell they were running out of real estate with some of the later abilities.
regarding the difficulty, there’s certainly a lot going on and the movement is fast and frantic but they’re super generous with checkpointing, I can’t think of a death I had where I lost more than a few seconds. The bosses definitely take a lot of tries but it’s more an exercise in memory/pattern recognition than anything. Reminds me a lot of the bosses in DKC:TF actually, bit more demanding on the movement/precision