This is a fun little game! I really like the cute visual touches like the sweep behind the gun as it moves, and the damage being actually represented on the robot by the loss of your spring then wheels rather than a generic health bar or hearts count or something
I think the thing I got on with least was the floatiness / weightlessness of the movement with wasd, I definitely get that you don't want the player to be too in control otherwise it would be too easy but there's something about how quickly you can speed up and drift around that feels off to me. Also like the other commenter I actually just used the arrow keys at first and was a bit confused before realising you were supposed to use both hands haha
I couldn't quite tell if the recoil got more powerful over time or as you collect points but I enjoyed how it forces you to adapt a bit, and also lets you go on without the spring and bounce around in the air without touching the ground. I feel like you could probably do a whole game around just this mechanic with no / limited wheel movement if you wanted