Thanks. I came back around to it. I did much better this time and voted on it. Good job. Question though: Do you get more health or defense somehow as you go through, like from the ad buffs? I eventually started trying to lose and was unable so I eventually just quit. I probably had too much health/defense buffs from dealing with so many ads.
We were in the process of implementing buffs as you progressed (more health, more turrets, faster bullets, faster reload, etc..) but unfortunately due to the time limitations we were unable to finish them on time. But I am planning on continuing its development, fixing the controls, and completing the buffs implementations. So stay posted!!
EDIT: The waves do get more difficult as you progress as well so it makes sense, there is also a bug with the ads counter, they're limited to 10 but they were supposed to reach 15 to end the game, so now I guess it's an endless sandbox.