I like the game,
The art is really nice and it feels good to play.
The controls are nice, I think it would feel nicer to move towards the direction of the mouse rather than the opposite though. Although it adds a nice intense feeling to the gameplay.
I also feel like the shield goes away too fast, maybe it should be held to keep active and then it recharges instead of using it then waiting till it can be used again,
I also think the camera is too close, and the zoomed-out version is too far, maybe a dynamic one where you can change it to how much you like it would be better
There were some movement jitter every now and then but nothing game breaking,
I think adding some extra combat, powerups/upgrades, a bigger world, and maybe some procedural generation would be such a nice idea to expand. I'd love to this going further