This is quite fun but challenging tower defense.
I like that you can change size of both your towers and enemies, it opens up some interesting tactical choices. Although as the game zooms out it becomes more difficult to aim the laser. Maybe instantly changing size of whatever is under mouse would work better.
Things also become quite frantic on later waves, so ideally you don’t want to micromanage your towers. But you have to because of damage reductions.
The moment when the camera zooms out is also a huge difficulty spike. If you didn’t go full mortars and instead tried out different tower, you may simply not have enough damage to cover all the passages. On my winning attempt I only used mortars and turrets because of that.
But after you get over that spike and get some more tower, things become really fun. Great job!