While I admire Zoroa's willingness to make a level with a restriction like this, it kinda just feels boring to play, honestly. It has its moments sometimes (particularly that one robot part where you jump over rows of spikes), but a lot of it is just the same general tropes over and over. And I don't guess there's really any way around that. Combine that with a few clicks being timings that you have to find out are timings, and it's not really the most fun experience, especially if you die to the end a lot. The deco feels kinda plain as well, which is probably again due to the format of the level; there's not really anything going on gameplay-wise, and so the only things there really are to make interesting are the foreground and the background, which feel disjointed from the actual level. It's a fine level for the constraint it was made under, but that constraint doesn't seem to lend itself to interesting levels.