This fits in so well with the theme! I like the interpretation of the dark side of 2020 under the guise of a new decade and a new start. The graphics are great too. However, I could not get past the starting part with the bee there. I die before I can kill the bee :P Maybe you could add some platforms or longer-ranged weapons to help. (Not sure if you added that further into the game)
Other than that, its a small and simple but interesting game. :D
I actually thought that your game was pretty interesting as it is almost the opposite of my game lel. My game was about how the dark year can be viewed more positively. Nice job! :D