Played till wave 80.
I really had a lot of fun with this game, oddly satisfying. Mashing all the fire rate, shot multiplier, one homing and a couple of piercing was enough to breeze through the enemies. The SPI modifier is stupidly powerful and I got like 5 of them.
The only time I found more than one gun useful was for testing purposes and then falling back to my main gun for survival. If the menu appeared when holding left click, sometimes the browser selected the text on the top.