Critique
There's not much I can say that's critical, especially given the time constraint factor, but another level of variance or two such as scaled health added on with the increasing number of enemies could make it a bit more engaging. The only other thing I can "complain" about is that you can't see the score while in-game. Also, I got the fabled wave 19 crash that's been the talk of the town lately.
Thoughts
Overall very enjoyable, I thought it was just hectic enough to suit my tastes. I liked the idea that after 6 (dice joke) waves it would create a new platform, and I would be interested in seeing how far it can go. Maybe my next playthrough of the game. Some would see it as unintuitive, but I thought the bullet drop mechanic was kinda goofy for an AK-47 (in a good way) and fun to mess around with. I also liked the chaotic feeling of your speed going up rapidly. I feel like thats the general theme here, the chaos made it charming in a way. Also, Gabriel Q. Sloan, I want you SO BAD.