Great job! The capture and shoot mechanic is a good idea. If I can offer some constructive criticism, please;
- It took me a little while to understand that I needed to capture an enemy in order to shoot a projectile. This isnt explained in an intuitive way.
Possible Fix: an option in the start menu can take you to a tutorial scene. Or you can have a scene that acts as a tutorial before the first stage when you start a new game. Or you could simply display dialogue that literally tells you how the mechanic works when you start the first stage.
- there are some bonus areas in the stages which I thought was cool. Only issue I have is they are inconsistent and I had no idea they were there until I watched the trailer. For example, midway up stage 1 you can go through a black door to the right of the scene but it looks exactly the same as the bottom black door at the bottom - which doesnt do anything. So its confusing to me.
Possible Fix: put in an arrow sign graphic in the background to direct the player into that first door. Then the player knows hidden areas are there. After that you may not need to put arrow signs anywhere because the player will start looking for them on their own.
- Finally, getting hit once and having to restart the entire stage is pretty frustrating because the punishment of having to redo the stage more than a couple of times becomes painful and not fun. You dont want the player to stop having fun.
Possible Fix: you could give the player some Health Points. Even just an extra hit would be fine. You could telegraph the hitpoints by changing the Player Sprite for example; If player has 2 HP then their hair is black, If 1HP then their hair is white. Something like that anyway.
Oh, and when you start a new game there is a typo: it says 'Capture and Kill all ENNEMIES'.
Keep at it! The game is really getting polished.