Kid Icarus of Myths and Monsters is a drag. You jump and shoot on the most boring of stages. 'But it was a different time! They only had two buttons at the time! And the gameboy's screen was small!' Yeah, well, look at Mario Bros classic, that game is even less complex than this one, and it's still a lot more fun. Look at Megaman, you jump and shoot, except that it's fun in those games.
But what makes it so boring? The fact that it's a grindfest. Climbing to the top of each level is relatively easier, but if you want to buy power ups, you are gonna have to abuse the endlessly spawning enemies to make a fortune. Which takes time. And stuff is expensive. Heck, the only way to increase your life bar is to finish a level with a high score, which means... going out of your way to kill as many enemies as you can. It's not fun, it's a waste of time.
I just defeated the first boss, and man was that boring. It wasn't even hard, it was simply boring, I had level 3 fire arrows, and kept pumping and pumping arrows but the thing wouldn't go down.
And that's my initial impressions with the game: It's a waste of time. I don't like it.