The game is pretty good, fancy and etc., but there is a gamebreaking bug! At the last level of the bridge section (stage 12) i encountered with an invincible enemy, who kept following me, untill I grew tired of not being able to kill it. I guess this should be fixed really quickly (i met this creep all the time i tried to finnish the map). Secondly, the AI should really be fixed. It is really frustrating to see my comrades running around the map to kill one ranged minion. On the other hand, this is a really challanging game, but still offers a lot of fun, I really recommend giving it a shot!
I pretty much like this game! Short, but intense shoot'em up. But around the last levels you get to much research points to spend on nothing. I think you should put in one or two more levels to weapons, or 1-2 new weapon.