Pretty decent game, and pretty cool that you made a Game Boy game. Gives it an aesthetic that I like. Vertical platformers are fun but it didn't really utilize the theme beyond that. The theme doesn't really affect the gameplay at all other than that it's a vertical game, which in itself is not a super original idea. The controls/movement also felt like they could be improved but that's something that can be hard to get right in a platformer. It was also a little hard for me to find where I was supposed to go at times but I did make it to the end. Lastly, the game could use some more types of obstacles and hazards to make the ascent more interesting. Anyway not trying to come down super hard, just wanted to offer some areas I thought could be improved. Finishing anything in such a short time is not easy, so good job!