Massive improvement from Kirby's Dream Land. The bosses were much more fun and harder. The moon and Sun, The big cloud, King Dedede, and the final boss who made me feel as if I was playing Gradius for the Arcade (ahh, good nostalgia right there). Man, I love it! It was genuinely fun!

The only downside is that for some reason on the switch, there was an input lag and it got TOO annoying.