The gameplay was pretty good. It had the feel of your basic twin-stick shooter. There was a decent variety to the enemies. The controls worked well. I liked the different colors warning you of what type of enemy was going to appear next. It was a shock the first time and upgraded version of one of the stationary enemies spawned and then started to move and shoot towards you. The score info was a bit small and I really didn't pay attention to it during play, so had to get a feel for when that change happened, rather than looking at score or wave. It could use with some upgrades or other ways to add variety. This feels like a good start, but would get repetitive after a bit, at least for me. This is not my normal type of game, though I have been playing more of them due to jams, so for those who do play this style regularly it may be just what they want without being distracted by upgrades.
When I first tried to play I had issues getting it to accept any input. It did not seem to want to react to the mouse, even after clicking around the screen. Eventually it responded. Maybe it showed the menu, but was still loading something. After that when I refreshed it worked fine. I also found that trying to use Itch's fullscreen button caused the display to be shifted down. This left a large black strip at the top, and an equal amount of the bottom off the screen. Using Escape to exit resulted in the normal view also being offset. I refreshed and tried again from the main screen, as I had been on the combat screen the first time, but it still did so. I used the browsers zoom instead. While writing this up I tried again to make sure my comments were accurate, and found that when I am at 140% browser zoom, the fullscreen is positioning things properly. I had tried 100%-120% in my initial testing, but didn't go up to 140% until I decided to just play with the zoom.