It's an okay game.
The thing that really got me was, I had like 27 Bubble Points, but I only used 4, but I only had 5 gun points. What's the point of having a ridiculously big, class 4-10 (or whatever) ship if you can't put very many guns of it? I made it through the first four levels with the very first blaster you get in the game, then through the next 6 with a machine gun.
Another thing is just how many shots it takes to kill a single enemy. Usually I can go through a stage without getting hit once, but it'll take like 60 shots to kill one thing. They're not difficult, they just take forever to kill. This could be solved if I could just put a fucking gun on my bubble, but I can't because I have such a small amount of gun points.
Now that I'm done ranting, the good parts: The simple graphics really compliment the game. If you were to make the graphics stupidly complex, that would've killed the game. However, it's a bit disappointing that you pretty much recycled parts from your last game, but painted them red.