Nice entry, the game is totally in the theme. Since I don't see much menu good job for it too !
The ambience is pretty cool with those graphics & music, it feels like a horror mansion =3
The gameplay is simple but fun, it would have been nice to add some new mechanics over the waves (other way to spend our money) since it feels a bit redundant after some waves or maybe punctual power up / events.
I think lowering the mouse speed could help to avoid player doing the "swiping no justsu".
A small feedback when you missed an enemy could be a nice adding (like a small red blink or ...).

Great job for your entry !

Very good-looking, passable sound, fits the theme, a settings menu!!! However, it's a bit unclear where the enemies are pathing and where they spawn from, so I often found myself dragging my cursor in circles and having it work without really trying or understanding what was happening. With some more clarity of interaction this could really shine (no pun intended).

I like! Took me a moment to figure out what is going on and what I am supposed to do, but overall, nice!