Interesting premise! I'm glad that you made it so that you can't just hover over the red ships' body to farm points, I ashamedly tried that and the circles made it past. A pretty fun little experience, and I like the addition of cheat codes, it gives it a very passion-oriented feeling.

Really good wave system - giving the player a small rest before the next ones starts - well done

Nice graphics and sound. I liked the random spacey/spooky sound effects, like there was something new going to happen.... The basic game is fun, but only for a short time, because it's too repetitive.  Should have more variation in attack patterns and speed of enemies as you progress though the game. Perhaps slow down the own ship and earn to speed it up?

Fun and addicting! I like the arcade throwback of including cheat codes :D