First, let me say that this is a really fun game in concept, but goes by far too quickly. My progression went: Wave 25->Wave 75-> Wave 200. I absolutely blasted through the overwhelming majority of the game within a few hours. Would've been far more enjoyable to have this pacing slowed down a bit.
The thing that made me finally set it down, however, was the broken Autoadvance feature. I'm not going to play the "press e for an hour" simulator. It broke within seconds of me obtaining it, and has been unusable despite refreshing/clearing cache/basic troubleshooting. Given how pivotal of a feature it is, I would consider this an absolute dealbreaker. Hopefully this and the overtuned pacing get addressed soon.