I like it. I played 2 levels at the moment and prefer play without the music (it's not bad but annoying me after some LONG time. It seems it's only one and will never change) and without post-processing because of it's so bright for me.
Also, I noticed some bugs or strange things:
- I can place towers on "walls" (they can be killed ^^);
Two 3 levels when I select a level in the menu.