nice game for the most part. you mixed up the enemies a little in the last 25% which was good. it was pleasantly challenging, though definitely on the easy side. as long as i had spray shot and homing missile powerups then i was fine, otherwise it was a bit tougher. the spiked ball powerup was really useless, but no matter. i quite expected a boss to finish off the game, but oh well. even though there was little variation in the gameplay and bosses and such, shooter's can't do much to avoid such simplicity. in all it wasn't great but wasn't bad either. i suppose i should mention that the music was good, it didn't particular stand out as good but it didn't annoy me at all either so it didn't get in the way either. the shield polarity element definitely kept me interested where i usually hate shooters, and it really helped to be able to stack powerups as well as keep old weapons on the next level - something that would have been a massive pain if it wasn't there. also, you might want to consider changing the standard key for shield polarity to something else, it isn't very practical at B for most people since people usually would press B with their left hand but the left hand is tied up in the movement controls (i changed it to K myself, anywhere around that area works). well done, good luck with your next projects. remember, don't get discouraged if you don't succeed with future works. just keeping going on, and make what you love to make. having a good time is more important than getting recognition (although getting recognition is a great bonus!).