The art is great! Aesthetically your game is quite pleasing; however, the gameplay is a bit lacking. All you do is press the spacebar repeatedly. I would recommend adding some other element to the game. Maybe you have to last to the end of the round and then you can spend your points on upgrades, or maybe the shield only defends, and your tongue is an attack. When designing a game, it's important that the player feels like they have something impactful that they can do, and adding decisions like upgrades is a great way to encourage the player to engage more.