Like the idea, however two important things have to be added. A score is needed to see how much we have progressed. Slowing down the enemies at the start, so we can move our player and get a fair shot.
Other than that, this is actually pretty good. The gameplay loop is addictive (which is a good thing). I definitely see some potential, but could use some more polish.
Oh yeah, and could you try making a thumbnail? Using memes just makes it look rushed and amateurishly made. Not a good first impression. A simple drawing would do.