Pros:
-Style: looks great, has flavor
-Sound: fitting, nothing to seriously complain about. A bit repetitive.
Cons:
-Controls: clunky and unreliable, this is a game that'd be better off with keyboard, not mouse controls. The gun feels sluggish and clicking buttons to activate powerups gets in the way of staying alive. Expanding the clickable area to skip text would help.
-Gameplay: see above about the controls, but the, "Got it!" messages aren't needed. I stopped on the second level when the cats just flew past you. Make the ship controllable always.
-Spelling: English isn't your first language, I assume, and that's understandable. This, however, needed serious proofreading before being released.
-Boring: it's just boring, but good attempt. Keep practicing.