This game is gorgeous. The explosion particles, the trails, the soft lighting... ah, it's so good. Intuitive, too. I like to just hit "play" and only look at the controls if I can't figure them out, but this one I was able to pick up right away. Side note: It is so satisfying to take out a cluster of enemies with a bomb, with all the particles and colors and lights flying everywhere. Ah, yes, I'll have more of that please!
I fought against jagged camera movement when the player moves diagonally in my own game, and a "floaty" UI when the player moves, so I feel your pain there. I used a different engine (Godot), so I guess some low-rez issues are truly universal.
You should take the sarcasm-quotes off of "game", because you've made quite a nice little game!