I genuinely had a lot of fun with bargaining how much I can fight and how much I can collect before needing to retreat or dying. The preparatory nature of shining light in selective areas before delving into a round and gaining upgrades for increasing visibility made delving into each round engrossing and unique. I also adore the upgrade system granting random buff choices by threes and gradually increasing price for all of them the more upgrades you purchase. It really makes one consider which stats are the highest priority for the next round for playstyle and strategic purposes.
I see that the visual and audio assets are not your creations, but when they are at serviceable quality, I value the considerate usage and placement of them more, and you do so very well for both. Every visual asset is crystal clear, with enemy spawn points and collision environmental objects being the most notable. The sound editing for the audio assets are well-tuned for their impact.
My only complaint is that some of the paid upgrades don't seem to have impactful effects for each incremental payment. Upgrades like larger vision from selection or players, health, and projectiles cutting through darkness are noticeable, but firing speed and movement speed aren't.