Looks like fun to play.
I'm hoping to get a longer gameplay video to improve on the accuracy of the difficulty progression. And, I'm not sure if this in the actual game, but I think the rabbit should automatically jump up on to the rope if the player stays on the ground for too long (otherwise they could stay there indefinitely). Either way, I'll be releasing it as a Homebrew on RetroLab since it was never released as a physical LCD game as I've recreated it in this version.
Noticed indeed one could stay @ the bottom like for ever. :D An automatic jump on the rope after a period of time would seem to be expected, kinda like the orange Donkey Kong does. Maybe a little speed up of the sequence and more frequent launches of the projectiles, depending on the scoring could be applied, as in most G&W games.