This is a nice tower defense type game and i like how you can also aim and control the towers! I think the UI is not super clear as i was a bit confused at first to select the powerups. I did figure out though later, but i think it can be made a bit more intuitive. The feedback on the guns and the explosions are great, really felt satisfying especially since none of them miss :D What i would change a bit in the gameplay is the speed of progression.. i think there should be more variety in the type of enemies coming in faster, atleast once you have all 4 platforms with turrets, or atleast the speed of the objects increasing, because what happened to me in my run was that i had 2 equipped with turrets and 2 with rocket launchers, so the instant an object came, it was destroyed.
Other than that i liked the overall artstyle and color palette and this definitely has a good potential. Good job :)