Hmm, not bad, but not great either! The Game-and-Watch or Tiger Electronic aesthetic is pretty amusing to look at: I like that authentic look where you can see all the possible sprite positions at all times, though I was a little disappointed that there were so few, as usually these games will have their screen jam-packed with all sorts of sprites, like you could've had some for enemies getting smacked to the side, or for game over with the clown crying, or something. The gameplay was alright, but it got repetitive rather quickly and wasn't anything to write home about, being a simple timing game.
I do have to give you credit though: a lot of these 'game and watch' games seem to be quite lazy and just use the graphics/aesthetic to carry it, but for this one, I actually liked that there was a decent amount of challenge in the patterns and waves you gotta deal with. It still wasn't that deep or addicting in the long-term, but it was more than I thought was gonna get, so not too shabby.