One of the first ideas my team and I had when deciding the core mechanic of our game, was switching between gameplay mechanics abruptly. In the end we opted for other ideas, but I'm very glad to find a game that applied that same idea we had and developed it in such a polished game.
Really enjoyed it, got incredibly frustrated by a tight jump but the fact I kept playing to reach the final boss (which scared me at first, very spooky sprite) is a testament of the enjoyment and fun I got playing your game >:)
Amazing work, congratulations! :)