The art, animation, and sound in this game are incredibly pleasant, especially considering how simple they are. It is hard to describe exactly: everything feels stylish, carefully made, and guided by a real sense of taste. I got a surprisingly strong aesthetic enjoyment from it. It is even a little unusual that, with such appealing visuals, the game uses standard fonts and such a understated main menu, though that is a minor detail.
The main area I would highlight for improvement is the difficulty curve. In games like Vampire Survivors, difficulty usually ramps up gradually and gives the player time to settle in before the game starts putting real pressure on them. That is one of the principles that makes Vampire Survivors such an effective time-killer. Here, by contrast, things escalate almost immediately: by the second wave, the number of enemies already feels overwhelming, and it becomes too hard to fight them off, especially since by that point you have only picked up one or two upgrades, and those may not even be useful.
The theme is clearly represented, and overall the game leaves a positive impression