Glad you had fun with it. I probably won't be updating this anytime soon, but if I do I'll try to make that a bit clearer. The struggle of wanting one button controls and not hunker it down with too much tutorial text lol.
Yeah, that's fair. I think a little text popup kinda like how WarioWare microgames work would be helpful. Like "Press Space!", "Hold Space" and "Hold Space, then Press!" could work. Or, just make it clear in the dialogue that the final one is a combination of the other two. Something like "This one will put all my skills to the test!"
But I don't think it even necessarily needs to change, either. It's short enough that it doesn't really matter.