I enjoyed playing this game! It has a lot of replayability from the many type of weapons you can choose from. My favourite weapon you can add to the mothership is the Rotator. Enjoyed adding multiple rotators and levelling it up.
I felt the feedback on the enemies death could of been better? I was getting confused if the bird was dead of alive which resulted me losing health. This mainly happened later in the game if it was busy. I personally found the 2nd stage a bit too difficult.
Other than that, it is a great game!