The music was very nice. Easy listening while playing the game. I also like the color palette choice as well as the noise/dithering effects utilized in the cover image.
The concept is definitely there and this can make for a fun game a la Holocure but I have some gripes with the game play in its current state. It's very unclear on what was going on early into the game but I did make sense of some of it over more runs. I would primarily attribute this to the lack of tactile feedback, indicators, or descriptions (i.e: highlights, sound fx, timers, animations, progression trackers, etc.) It took me a while to realize that the green dots were experience bubbles but what was odd was that they would all fly over to a random line on the x-axis on what seemed like an infinite map - an effect very easy to miss when the map is flooded with enemies.
Off the top of my dome, I personally feel these features would heavily improve the feel and coherency of the game play: the ability to hover over the weapons for descriptions on what they do, pause menu featuring hover boxes for the weapons that feature descriptions and current damage values/effect(s) for weapons, damage state color or animation and sound for the player to indicate when I am damaged, color indications on the weapons to indicate what debuff is associated with what color.
Most importantly, this is a working game so kudos for managing to whip it up all together in the 2 week time frame!