Very good. As for the game itself, the fact that the yellow asteroids can appear right in front of the ship is frustrating (death by bad luck: the player can't do anything to avoid it).
I didn't expect people to comment on the game itself... It is indeed quite simple at the moment. Maybe your opportunity to get your feet wet with Rust by improving the game logic?
And apart from that holding space + arrow is a very effective strat, doubly so if you do it so half your circle wraps from one end to the other confusing the tracking.
I got that "perfect circle" hitting all 4 corners and really started messing with the pathfinding--it started pulling all of the enemies into the center until a baddie spawned on me and ended my streak. Fun game, and really interesting article on WASM.
I'm currently sick at home and I don't have the mental energy to do anything useful but I actually found this oddly amusing and mesmerizing ... Because you shoot so quickly and turn so fast, I found that you can just hold down the spacebar and turn around to use your stream of projectiles kinda like a whip, turning left and right to get the curvy stream to intersect with the ships. This also defeats most of the right-in-front-of-you spawns. Anyway, very neat!