Heyo ~
All the mechanics you implemented were super solid, and non buggy. I liked the theme a lot and thing the sound effects and visuals worked really well for it, though I felt terrible murdering all of those cute little blobs (though, maybe that was the point lol)
Since there wasn't really a challenge to shooting blobs I kinda wish that orienting yourself wasn't so challenging. If this was a game where things were coming and you had to avoid them while also shooting them I would have understood, but because the player wasn't in any danger I think the mouse shoot mechanic ended up being more frustrating than challenging.
I am really impressed that you kept the game small and finished, most beginners go way over scope and end up with a game that feels and looks unfinished. I didn't feel that way playing your game and was very impressed, so great job!