Heh. fun shooter! I like the feel of the controls. The difficulty is perfect. The variety in enemy is good. The levels could have a bit more of a different feel to them. they did feel quite sammey in the way the monsters spawned in a similar way. Perhaps one with Just Red bombs for example would have been interesting. Or all from one side coming across.
The Boss was different and fun. Quite mad with those bomb particles going off and him getting faster and faster :D. Finishing him off was hard :D.
Liked the trail effect on the enemies.
Nice job, well done.