It's okay, but the previously mentioned problems (especially the maze) made it a bit confusing and hard. Yet except for those hard parts...it was really easy.
Okay what the crap. Left and right turn the ship...but up and down go up and down on the screen? That's messed up. Also dying after killing the enemy (their tail hits you while you can't move and it's going to the next level) should be fixed.
Interface and instructions need a lot of work. The text on the interfaces disappear and makes it hard to figure out what buttons do what, not to mention I can't find a back button.
Good game and fun, but change the black text. Can't ever see my ammo or anything because of the gray scale. I'd suggest maybe having the store a bit sooner, I kept wondering when I'd finally get something besides a pistol, but still fun. (Note: Also te stop for the music only stops for that stage/area. Once you start the game again or fight a boss it comes back up.)
Frustrating not being able to move diagonally, loading time was ridiculiously slow, no pause, and it would help if you got someone to check over your English for you. A lot of people look poorly on a game just because the English is bad (though I'm sure English isn't your native language, most people don't give you that kind of credit.) 3/5 for effort and potential.
Or perhaps it's my connection at my school, which prevents me from doing things such as chat, badges, cards, submitting scores, etc. I'm lucky to be able to even play any games.