I knew about this games for weeks now but only now played it. And played it again. And played it again. And played it again. So far I like what I'm seeing and it's nice to see a classic run'n'gun game that's playable for beginners of the genre!
However, I still wanted to provide you some feedback.
-While I like the artstyle and characters, I think the sprites are just a bit too small. Atleast this stage didn't take advantige of the huge screen size compared to the character sprites. Zooming in a bit might help this but the sprites are already this smalland a bit blurry to begin with (due to texture filtering?).
-I don't like the weapons. While the default umbrella works well, every other weapon felt like a gimmicky downgrade. Sure the camera is a cute idea and the bommerang is fun but I'd rather stick to the Umbrella instead of using the spray can for example. The projectiles also didn't really fit the artstyle but that might be a placeholder as well.
-The circle that indicates which attack might hurt you or not is obviously a placeholder but I'd suggest to use colorcoding instead of this biiiig circle.
Other than that, I dig this and hope you'll keep working on this. It's so refreshing to see a game in this genre that doesn't try to look like Contra and you created a neat, fun little world to explore.