I like the idea of being a gundam/nuclear reactor robot!
your projectiles are child of the main character, make them child of the world when you can!
Also the character is kinda vibrating, I don't know why, but I'm not sure it's intended!
I assume it's your first game, good job doing this much already!
I was surprised you made a logo for your game as a desktop app. I never think of doing that.