Awesome game, but why can't I control angle and engines separately? There's no way to glide after the boosters fail, and I can't go faster without also going up.
Upgrades seem to come too slowly, and there is a heavy emphasis on completing achievements early instead of late. Maybe we should get three upgrade points after each wave instead of just one.
Needs a way to lower the quality. It's the only game on Kongregate that I've had lag for me.
(I'm using a four-year old laptop with an integrated graphics card, but it handles other flash games without trouble)
We shouldn't have to switch to the mouse to navigate menus and the keyboard to play the game. If the game uses keyboard controls, the menus should have the option for keyboard controls as well.
Starcraft references abound. The human fighter sounds a lot like Jim Raynor.
Some of the voices aren't clear enough. When you click on a human warp gate it sounds like the woman says "This job is ovulating."