Very nice shooter and controls more realistic than other shooters!
(Someone might need time to adjust coming from other shooters)
Great music and effects! Nice menu screen effects!
The scrolling is perfectly smooth! The gradual difficulty curve is well adjusted.
Keep up the good work!
Suggestions for future improvements/additions:
Allow a larger movement field if possible
(the bottom area of the screen is unreachable, might be on purpose but feels it should be accessible)
Add more random distance to enemy shots
(enemies are always accurately targeting your current location and not where you could be moving)
Adding a special weapon or loops to evade enemy fire for a few seconds (invincibility effect)