The game was fun to play, good job!
But it does have some issues. Some QOL stuff is missing (eg. moving turrets, deleting turrets), and the wave starts immediately without giving you time to place a turret.
I liked the music, but the turret sound is obnoxious. If you place a bunch of turrets down and speed up time your ears will die xD
And like ddrosler said the levels were a bit small.
But good job! :D